How to use slmgr to change remove or extend your windows license

How to Use SLmgr to Change, Remove or Extend your Windows? – Today everyone is having their own PC or laptops and using all its advanced features and functions. But sometimes the user who is not a tech-savvy person get stuck in between the issue and seek help. Therefore we with our professional technical expert team are here to solve your various issues within no time. Tech2Assist is a reliable company that is providing the best customer support services across the globe. In this blog post, we are describing How to Use SLmgr to Change, Remove or Extend your Windows?

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Various Ways to Use SLmgr to Change, Remove or Extend your Windows?

Here we are providing you different ways to use SLmgr. Carefully read them and follow:

Open an Administrator Command Prompt Window

To use this tool, you all want to launch a Command Prompt with Administrator access. For this on Windows 8 or 10, press Windows+X or right-click the Start button. In the menu click the Command Prompt option that appears. Now on Windows 7, search the Start menu for Command Prompt, right-click it and select “Run as Administrator”.

Note: On the Power Users menu, if you see Powershell instead of Command Prompt, which is a switch that came about with the “Creators Update for Windows 10”. You can do everything in Powershell that you can do in Command Prompt.

Check License, Activation and Expiration Date Information

Run the command ‘slmgr .vbs /dli’ to display very basic license and activation information about the current system. This command will tell you the edition of Windows, part of the product key so that you can identify it, and the system is activated or not. In order to display more detailed license information including installation ID, activation ID, and other details – run the command ‘slmgr .vbs /dlv’.

Check the License Expiration Date

Run the command ‘slmgr .vbs /xpr’ to display the expiration date of the current license. This will only work for the Windows system activated from an organization’s KMS server, as multiple activation keys and retail licenses result in a perpetual license that doesn’t expire. It will give you an error message if you haven’t provided a product key.

Uninstall the Product Key

From your current Windows system with Slmgr, you can remove the product key. Restart your computer and run the command slmgr .vbs /upk. The Windows system will not have a product key and will be in an unactivated & unlicensed position. In case you want to install windows from a retail license and would like to use that license on another PC, then this allows you to remove the license.

It will also help you if you are giving that computer away to someone else. However, most of the Windows licenses are connected to the computer they came with unless you have to purchase a boxed copy. Uninstall the current product to remove it. Run the command ‘slmgr .vbs /upk’ and then restart your computer.

Windows also stores the product key in the registry as it is sometimes essential for the key to be in the registry when setting up the computer. Run the command ‘slmgr .vbs /cpky if you have uninstalled the product key to make sure that it is removed from the registry as well. Keep in mind that running this command alone will not uninstall your product key. It will remove it from the registry and that is why programs cannot access it from there, but your Windows system will remain licensed unless you have to run this command to actually uninstall the product key. This option is designed to prevent the key from being stolen by malware.

Change or Set the Product Key

To enter a product key use slmgr.vbs. In case the Windows system already has a product key, using the command ‘slmgr .vbs /ipk #####-#####-#####-#####-#####’ will replace the old product key with the one you provide. The command will check the product key you enter to make sure it is valid before using it. MS office recommends you to restart your computer after running this command.

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Windows activation is designed to be as foolproof as possible, so Microsoft’s graphical tools keep it simple. If you want to do something more advanced like remove a product key, force an online activation, or extend the activation timer, you’ll need Slmgr.vbs.

This command line tool is included with Windows, and provides options unavailable in the standard activation interface provided on the Update & Security > Activation screen in the Settings app.

First: Open an Administrator Command Prompt Window

To use this tool, you’ll want to launch a Command Prompt with Administrator access. To do so on Windows 8 or 10, either right-click the Start button or press Windows+X. Click the “Command Prompt (Admin)” option in the menu that appears. On Windows 7, search the Start menu for “Command Prompt,” right-click it, and select “Run as Administrator.”

View Activation, License, and Expiration Date Information

To display very basic license and activation information about the current system, run the following command. This command tells you the edition of Windows, part of the product key so you can identify it, and whether the system is activated.slmgr.vbs /dli

To display more detailed license information–including the activation ID, installation ID, and other details–run the following command:slmgr.vbs /dlv

View the License Expiration Date

To display the expiration date of the current license, run the following command. This is only useful for Windows system activated from an organization’s KMS server, as retail licenses and multiple activation keys result in a perpetual license that won’t expire. If you haven’t provided a product key at all, it’ll give you an error message.slmgr.vbs /xpr

Uninstall the Product Key

You can remove the product key from your current Windows system with Slmgr. After you run the below command and restart your computer, the Windows system won’t have a product key and will be in an unactivated, unlicensed state.

If you installed Windows from a retail license and would like to use that license on another computer, this allows you to remove the license. It could also be useful if you’re giving that computer away to someone else. However, most Windows licenses are tied to the computer they came with–unless you purchased a boxed copy.

To remove uninstall the current product key, run the following command and then restart your computer:slmgr.vbs /upk

Windows also stores the product key in the registry, as it’s sometimes necessary for the key to be in the registry when setting up the computer. If you’ve uninstalled the product key, you should run the below command to ensure it’s removed from the registry as well. This will ensure people who use the computer in the future can’t grab the product key.

Running this command alone won’t uninstall your product key. It’ll remove it from the registry so programs can’t access it from there, but your Windows system will remain licensed unless you run the above command to actually uninstall the product key. This option is really designed to prevent the key from being stolen by malware, if malware running on the current system gains access to the registry.slmgr.vbs /cpky

Set or Change the Product Key

You can use slmgr.vbs to enter a new product key. If the Windows system already has a product key, using the below command will silently replace the old product key with the one you provide.

Run the following command to replace the product key, replacing #####-#####-#####-#####-##### with the product key. The command will check the product key you enter to ensure it’s valid before using it. Microsoft advises you restart the computer after running this command.

You can also change your product key from the Activation screen in the Settings app, but this command lets you do it from the command line.slmgr.vbs /ipk #####-#####-#####-#####-#####

Activate Windows Online

To force Windows to attempt an online activation, run the following command. If you’re using a retail edition of Windows, this will force Windows to attempt online activation with Microsoft’s servers. If the system is set up to use a KMS activation server, it will instead attempt activation with the KMS server on the local network. This command can be useful if Windows didn’t activate due to a connection or server problem and you want to force it to retry.slmgr.vbs /ato

Activate Windows Offline

Slmgr also allows you to perform an offline activation. To get an installation ID for offline activation, run the following command:slmgr.vbs /dti

You’ll now need to get a a confirmation ID you can use to activate the system over the phone. Call the Microsoft Product Activation Center, provide the installation ID you received above, and you’ll be given an activation ID if everything checks out. This allows you to activate Windows systems without Internet connections.

To enter the confirmation ID you’ve received for offline activation, run the following command. Replace “ACTIVATIONID” with the activation ID you’ve received.slmgr.vbs /atp ACTIVATIONID

Once you’re done, you can use the slmgr.vbs /dli or slmgr.vbs /dlv commands to confirm you’re activated.

This can generally be done from the Activation screen in the Settings app if your PC isn’t activated–you don’t have to use the command if you’d rather use the graphical interface.

Activation is the process by which your Windows device is licensed and considered genuine. Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms permits. See the following guide on how to find your Windows 10 Product key and how to replace your windows license via the Graphical User Interface (GUI), “check Windows 10 activation status and change your product key“. The Software Licensing Management Tool (slmgr) commands are used to enable advanced Windows activation tasks (change, uninstall, or install) your product key. See this guide on other methods to find your Windows product key, how to activate DriveLock License on Windows Server, and how to find your Windows 10 Product key.

Slmgr ipk: Ipk means, “Install Product Key”. If you intend activating Windows via the command-line, this can be realized by running the syntax “Slmgr -ipk” followed by your product key. To do this, launch the Windows Command Prompt with Administrative rights as shown below.

– This will open the command line interface, enter the command and your product key as shown below.
– Press enter when you are done. You should get a prompt showing the product key status is valid or invalid.

Slmgr dlv: After running the above command “Slmgr -ipk” to activate Windows, you can run the “Slmgr dlv” to see whether your Windows license is activated. If this is the case, the window that opens shows the entry Licensed under License status. To do this, launch the command prompt with Admin privileges.

Slmgr dti: In the course of no internet connection or you are working in an isolated environment and you wish to activate your Windows PC, this can be achieved with the “slgmr -dti” command. This will ensure your Windows is activated offline without an Internet connection. To do this, enter the command in the command prompt with administrator privilege as shown below.

Slmgr upk: You can also uninstall Windows keys using the slmgr.vbs script. This is useful if you want to transfer the key from one PC to another.

Slmgr rearm: The command can be used to extend (delay) Windows activation. As described in the table above, it resets the evaluation period and licensing status, and activation state of the computer. To do this, launch the Windows Command Prompt with Administrative rights

In the Command Prompt Window, please enter the following key: slmgr -rearm

You will have to restart your system in order for the changes to take effect. This command can be run about 3 times consecutively after the original activation period has expired and this amounts to a period of 120 days.

Slmgr -xpr: To display the expiration date of the current license, run the following command. This is only useful for a Windows system activated from an organization’s KMS server, as retail licenses and multiple activation keys result in a perpetual license that won’t expire.
– As you can see below, I do not have a license and my Windows is currently in the “Notification Mode”. What this means is that the windows system has changed to being in a “grace period” and the system is running without being fully activated. See Slmgr rearm above for how to extend your license validity.

Slmgr /dli: This will display the current license information with activation status and partial product key as shown below. – As you can see below, I do not have a license and my Windows is currently in the “Notification Mode”. What this means is that the windows system has changed to being in a “grace period” and the system is running without being fully activated.

Perform slmgr (Windows Activation) actions on remote devices
You can also remotely administer computers on your network by using the following syntax below. The square brackets [] enclose optional arguments, and angle brackets enclose placeholders. When you type these statements, omit the brackets and replace the placeholders with your values. The following figure below describes the syntax of the slmgr.vbs script. Use any syntax of your choice.

I am certainly not sure if the image above did a good in explaining these commands, kindly see the following table below for more slmgr syntax.

I hope you found this blog post helpful. If you have any questions, please let me know in the comment session.

To extend the test period or to use Windows 10 without activation , you can continue to use the slmgr -rearm even with Windows 10 Home and Pro!

But, currently the trial period extension is under Windows 10 not required, also for a Legal Windows 10 Download!

Content: Solutions
1.) . Extend trial test period on Windows 10!
2.) . Does windows 10 have rearm count?
3.) . for what is Slmgr-rearm in Windows 10 good?

1.) Extend trial test period on Windows 10!

The command slmgr -rearm is actually provided, even if the hardware has been not replaced on the PC to enable reactivation with a new product key (Key). Thus, you have an additional three times, new 30 days for the new activation.

After the period 4 x 30 days = 120 days, you must purchase an ► Windows 10 License Key Lifetime (

15 to 30 $ or a full version

(Image-1) slmgr -rearm extend the trial period!

Windows 10 License Key or OEM or Full Version

Windows 10 Full Version = Telephone support and Windows 10 DVD
Windows 10 OEM = Windows 10 DVD / no Telephone support
Windows 10 OEM = ISO Download / No Telephone support no Windows 10 DVD

2.) Does windows 10 have rearm count?

How many re-arms do I have left in Windows 10 is a question of many users, thus, you have an additional three times. If yo do a new Installation again three!

See this: ► Clean Installation of the Windows 10, how to do?

Top User Questions:
How long can one use a fresh Windows 10 install without product!
How to Use Slmgr to Change, Remove, or Extend Windows
How to Find Windows 10 Licensing Information about Rearm Count

Command to see the Rearm Count is slmgr /dlv

(Image-2) rearm count!

3.) for what is Slmgr-rearm good in Windows 10 ?

This test period extension command can also be used for what it is intended, and that is in case of hardware changes, graphics card, hard disk replacement or expansion of the memory to allow the Windows -10 computer with a valid product key can be properly activated. Otherwise would be a clean installation of Windows 10 required.

I am deploying Windows IoT 2019 LTSC to devices that we sell. These devices use ePKEA licensing, i.e. there is one product key for all devices, and each device gets a hologram sticker with no key on it. We need to install Windows using our key and then delete it after installation using slmgr.vbs /cpky.

We used to create a user, clone the image, and run this as a RunOnce script. But now I want the images to go properly through the OOBE. So I create the master image, sysprep /generalize it, and then clone it. The question is now, where do I delete the key to safely ship these devices?

I heard sysprep would delete the key, this is not the case as I can still extract it using Nirsoft ProduKey. RunOnce would run after OOBE but this is too late. A user could interrupt it and extract the key.

I thought maybe using an unattend.xml with RunSynchronous in Microsoft-Windows-Deployment, and then calling slmgr.vbs /cpky, but it doesn’t seem to work.

How would you preactivate Windows and clear the product key while retaining OOBE?

(It might work to go through OOBE, activate, then reinstall, and rely on online activation (no key) to work, but this is too cumbersome. We are also investigating OA3, but this is not possible yet.)

Like it or not, Windows Server licensing is more critical than ever before with Windows Server 2008. It is important to know how to license your Windows 2008 Servers from the command line, to see how much time you have left in an eval, or uninstall licenses. In this article, you will learn how to use Microsoft’s command line tool for doing that – slmgr.vbs.

What is slmgr.vbs?

Microsoft’s command line licensing tool is slmgr.vbs. The name actually stands for Windows Software Licensing Management Tool.

This is a visual basic script used to configure licensing on any Windows 2008 Server – either the full version or the core version. To see what slmgr.vbs can do, you can simply run a Windows command prompt (with cmd) and type:

Figure 1: Help window for slmgr.vbs

This will pop up a help window that will give you all the slmgr.vbs options. Here are the various tasks you can perform with slmgr.vbs:

• Manage licensing not only on the local server but also on remote Windows 2008 Servers, over the network. A username and password is required for this. The default machine to manage, if none is specified, is the localhost.
• Install product keys with the –ipk option.
• Active Windows 2008 with the –ato option.
• Display license information with the –dli option.
• Display detailed license information with the –dlv option.
• Show when the current Windows license will expire with the –xpr option.
• Clear the current Windows product key from the registry for security reasons with the –cpky option.
• Install a license with the –ilc option.
• Reinstall system license files with the –rilc option.
• Reactive a Windows evaluation license with the –rearm option.
• Uninstall a certain product key with the –upk option.
• Display your installation ID, used by Microsoft for offline (telephone) activation, with the –dit option.
• And finally, you can active a product with the confirmation ID using the –ato option.

Let’s see some examples of how Windows 2008 slmgr.vbs can help us.

How can slmgr.vbs help with Evaluation licensing?

If you are evaluating Windows Server 2008, you should know that license activation is not required. An evaluation version of Windows Server 2008 will work for 60 days. While many admins do not know it, you can “re-arm” that evaluation period for another 60 days, three times over. Thus, you could evaluate Windows 2008 Server for a total of 240 days, or about 8 months – wow!

You can re-arm this evaluation of Windows 2008 using slmgr.vbs. To do this, just type:

slmgr.vbs –rearm

Figure 2: Results after rearming your Win 2008 evaluation copy for another 60 days

To see how much time you have left in your current evaluation period, just type:

slmgr.vbs –xpr

Figure 3: Results of xpr command, showing the date and time that the license grace period for Win 2008 expires

In fact, Microsoft even has an interesting knowledgebase document on how to automatically extend the evaluation of licensing with a script. By implementing this script, you could use Windows Server 2008 for the full 240 days without having to do anything. For more information on that, please see Microsoft KB 948472.

How do I get detailed information on my Windows Server 2008 license?

To get more detailed information than just the expiration date (given by the xpr command), you can use the dli or dlv options. Here is what their output looks like:

Figure 4: slmgr.vbs –dli output showing license information

As you can see in the –dli option output, there is more information on the version of Win 2008 you are running, the license status, time renaming (down to the second), and all about the key management server.

Figure 5: slmgr.vbs –dlv output showing detailed license information

With the –dlv option, there is even more detailed information about the current state of your licenses.

How can I activate my license in Windows 2008 Server Core?

As I mentioned above, when I listed out the options, slmgr.vbs is used to activate Windows 2008 Server at the command line. Now in Windows Server Core, with only a command prompt, you are forced to use slmgr.vbs to activate your Core server from the command line. Thus, it is much more critical to know how to use slmgr.vbs if you are using Windows Server Core. Still, every Admin, in my opinion, should know the basics of using it.

So, say that you are on your new Windows Server 2008 Core server and you want to activate it. Let’s assume that you entered a product key during the installation process. To activate your OS, just type:

slmgr.vbs –ato

If you do not have networking configured, or you get another error, you will get a window that says something like this:

Figure 6: Error from slmgr license activation

In my case, I received this error because I had not yet configured an IP address on the Win 2008 Core Server. And, I received the error again because I did not have DNS and a default gateway configured. Keep in mind that all of these things are necessary for a successful activation of Windows 2008!

If you did not enter a product key during the install process, you can enter one with slmgr.vbs at the command line with:

slmgr.vbs –ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

(assuming you have a MAK key, not a KMS key)

From there, you can attempt the auto activation again.

Figure 7: Successful activation of Windows 2008 with slmgr.vbs

If you are successful (as I finally was), you should see the “product activated successfully” window, as you see in Figure 7. Hoorah!

How do I administer licensing of a remote Windows 2008 Server using slmgr.vbs?

As I mentioned above, you can administer not only local servers but also remote Win 2008 Servers from the command line, using slmgr.vbs. You just need the server hostname/IP address as well as the administrator username and password.

To do this, just place the machinename, then username, and then the password between the slmgr command and the options, like this:

slmgr.vbs server2 administrator MyPassWord1 -xpr

Note:
You do not have to use the .vbs extension on the slmgr command. It will work just fine if you type slmgr and your command options.

Microsoft Windows is the popular most operating system. As we all know that it is not free and hardly very few of us can afford it. You can download the trial copy of any Windows OS version from the official website of Microsoft. This trial copy of Windows is only valid for 30 odd days. Once the trial period is over, you can’t use the Windows copy on your PC. You require reinstallation of Windows OS and this is impossible in each month. Therefore, we are here with a trick that will guide you to reset the Windows 7 or Windows 8 or Windows 8.1 or Windows 10 trial period and you can use it for another 30 days for free. For this, you need to use ‘skipream’ command.

However, generally, a Windows user can extend the trial period only for three times using ‘SkipReam’. But using a simple registry tweak, you can extend Windows 7, Windows 8.1 and Widows 10 trial period for another 240 days. Every time the ‘skipream’ is run, every time the trial period resets to another 30 days. But, Microsoft with a brilliant technique, does not allow users to run that command more than three times unless you do a registry tweak to bypass the barrier and run the ‘SkipReam’ command for another eight times.

What is ‘SkipReam’? ‘SkipReam’ lets you use any Windows operating system including Windows 7, Windows 8, Windows 8.1 and Windows 10 without activating. Let’s see, how to extend Windows trial period for one year. Note that, the method, described below, is valid for both of the Windows 32-bit and 64-bit versions.

Method 1: Command Prompt Method to Reset and Extend Windows 7, Windows 8/8.1 Trial Period upto One Year

1. Open command prompt with administrative privilege.
2. Type slmgr -rearm in the command box and press ‘Enter’.
3. You will be asked to restart your system. Just restart your PC and check the system status using slmgr/xpr command. Another 30 days of trial period will be added.
4. Follow the same steps thrice to get additional 90 days (3*30=90 days) usage.
5. Registry tweaks to get additional 240 days trial period: Open Windows Registry Editor (You can use ‘regedit’ command for to open it).
6. Take a backup of whole Windows registry system.
7. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform
8. In the right section find out the SkipRearm dword 32-bit key and change its value to ‘1’ from ‘0’.
9. Press ‘Ok’ and you are done. Now, you can reset Windows OS trial period eight more times.

Now, the total trial period of Windows OS = =360 days.

Below, the picture suggests the above procedure in a summarised fashion.

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• Siehe auch: ► Product Key in Windows 10 ! 1.) Testphase unter Windows 10 verlängern! Der Befehl slmgr -rearm ist eigentlich vorgesehen, um auch, wenn keine Hardware am PC ausgetauscht wurde, eine Neuaktivierung mit einem neuen Produkt Schlüssel (Key) zu ermöglichen
• Slmgr ist ein Skript von Microsoft, mit dem ihr per Eingabeaufforderung den Windows -Key ändern, deaktivieren oder installieren könnt. Wir zeigen euch, was die einzelnen Befehle rearm, ipk.
• Extend trial test period on Windows 10! The command slmgr -rearm is actually provided, even if the hardware has been not replaced on the PC to enable reactivation with a new product key (Key). Thus, you have an additional three times, new 30 days for the new activation
• Slmgr führt normalerweise die Aktionen aus, die Sie auf dem aktuellen Computer angeben. Sie können Computer in Ihrem Netzwerk jedoch auch remote verwalten, wenn Sie Zugriff darauf haben. Der folgende erste Befehl gilt beispielsweise für den aktuellen Computer, während der zweite auf einem Remotecomputer ausgeführt wird

Fernstudium Windows 10 – Ihr Portal fürs Online-Lerne

1. Software Licensing Management Tool (slmgr) is a VBS file in Windows against which you can run commands to perform advanced Windows activation tasks. You don’t need to use Slmgr.vbs to activate Windows or change the product key, but you might need to if the normal activation process fails or if you get strange Windows is not genuine errors
2. ) option in the menu that appears. On Windows 7, search the Start menu for Command Prompt, right-click it, and select Run as Ad
3. In der deutschen Version von Windows Server 2019 oder 2016 öffnen Sie das Fenster ausführen (Windows-Logo-Taste + R) Slmgr Dlvausführen und untersuchen Sie das Windows Script Host-Fenster.Im Skript bemerken Sie, dass die Zeile Verbleibende SKU rearm Anzahl: % Anzahl fehlt, und die verbleibenden Windowsrearm zählen: %Count% zweimal Zeile.. In diesem Szenario ähnelt Windows Script Host.

Kann man mit slmgr -rearm den Windows-10 Testzeitraum

• Zuletzt können Sie slmgr /ato kopieren und einfügen und die Eingabetaste drücken, um Windows 10 kostenlos mit CMD zu aktivieren. So aktivieren Sie Windows 10 Pro mit CMD Schritt 1. Klicken Sie auf Start und geben Sie cmd ein
• Next you can copy and paste this command line and hit Enter to install the Windows 10 product key: slmgr /ipk . Replace Windows 10 activiation key with the real license key that you buy or find online for Windows 10 OS. Note: It’s advised that you support and buy the original Windows 10 license key from Microsoft and use this way to permanently activate Windows 10.
• Windows 10 (including all versions starting at Windows 10 Creators Update) is deployed to a device by having the appropriate default product key. You can run slmgr /dli or slmgr /dlv to show the partial default product key instead of the OA3 DPK as the current license in the firmware
• istrative permissions. Press the Windows + X keyboard shortcut, then select Command Prompt (Ad
• Windows has a Windows Software Licensing Rearm Program which is tasked to manage all the activation related data. The slmgr -rearm command simply reactivates the windows evaluation license. Reactivation using this registry can reset the activation timer values to zero resetting the system to its default state as if it is new
• slmgr /xpr Okay so I Have A Windows 10 Original and I was trying to crack for a game I had to test something using a program , and the crack program had different options one of which was to crack windows, i already have an original windows that came with the asus rog g752, And I didn’t notice I chose to crack windows until the process was finished. I was panicked so i googled and found that.

slmgr/rearm never worked for me on Windows 10 LTSB Eval. Always set it expired not renewed. You mileage may vary. Thursday, December 29, 2016 10:34 PM. text/html 12/30/2016 5:03:43 PM kapiltv21 0. 0. Sign in to vote. Ok I will check this command like you wrote me. Thanks for answer. Friday, December 30, 2016 5:03 PM . text/html 1/6/2017 8:21:51 AM Teemo Tang 0. 0. Sign in to vote. Would you. For this on Windows 8 or 10, press Windows+X or right-click the Start button. In the menu click the Command Prompt option that appears. Now on Windows 7, search the Start menu for Command Prompt, right-click it and select Run as Administrator. Note: On the Power Users menu, if you see Powershell instead of Command Prompt, which is a switch that came about with the Creators Update for.

首先：打开管理员命令提示符窗口

要使用此工具，您需要启动具有管理员访问权限的命令提示符。 要在Windows 8或10上执行此操作，请右键单击开始按钮或按Windows + X。 单击出现的菜单中的“命令提示符（管理员）”选项。 在Windows 7上，搜索开始菜单中的“命令提示符”，右键单击它，然后选择“以管理员身份运行”。

查看激活，许可证和到期日期信息

查看许可证到期日期

要显示当前许可证的到期日期，请运行以下命令。 这仅对从组织的KMS服务器激活的Windows系统有用，因为零售许可证和多个激活密钥导致永久许可证不会过期。 如果您没有提供产品密钥，它会给你一个错误消息。

卸载产品密钥

如果从零售许可证安装Windows并想要在另一台计算机上使用该许可证，则可以删除许可证。 它也可以是有用的，如果你把这台电脑给别人。 但是，大多数Windows许可证都与其附带的计算机绑定 – 除非您购买了盒装副本。

Windows还会将产品密钥存储在注册表中，因为在设置计算机时有时必须在注册表中包含密钥。 如果您卸载了产品密钥，您应该运行以下命令，以确保它也从注册表中删除。 这将确保未来使用计算机的人不能抓住产品密钥。

单独运行此命令不会卸载产品密钥。 它将从注册表中删除它，所以程序不能从那里访问它，但您的Windows系统将保持许可，除非您运行上述命令实际卸载产品密钥。 此选项实际上旨在防止恶意软件窃取密钥，如果当前系统上运行的恶意软件获得对注册表的访问权限。

设置或更改产品密钥

运行以下命令替换产品密钥，用产品密钥替换##### – ##### – ##### – ##### – #####。 该命令将检查您输入的产品密钥，以确保其有效，然后再使用它。 Microsoft建议您在运行此命令后重新启动计算机。

激活Windows在线

要强制Windows尝试在线激活，请运行以下命令。 如果您使用Windows的零售版本，这将强制Windows尝试使用Microsoft的服务器进行在线激活。 如果系统设置为使用KMS激活服务器，它将尝试使用本地网络上的KMS服务器进行激活。 如果由于连接或服务器问题而未激活Windows并且您想强制它重试，则此命令可能很有用。

激活Windows离线版

您现在需要获得一个确认ID，您可以使用它通过电话激活系统。 调用Microsoft产品激活中心 ，提供您在上面收到的安装ID，如果一切都结束，您将获得激活ID。 这允许您激活没有Internet连接的Windows系统。

一旦完成，您可以使用 slmgr.vbs /dli 或 slmgr.vbs /dlv 命令来确认您已激活。

扩展激活定时器

某些Windows系统提供有限的时间，您可以在输入产品密钥之前将其用作免费试用。 例如，Windows 7提供30天的试用期，然后才开始向您投诉。 要延长此试用期并将其重置为剩余30天，您可以使用以下命令。如Microsoft的文档所示，此命令“重置激活定时器”。

此命令只能使用几次，因此您不能无限地延长试用。 它可以使用的时间取决于“重计数”，您可以使用 slmgr.vbs /dlv 命令查看。 它在不同版本的Windows上似乎不同 – 在Windows 7上是三次，在Windows Server 2008 R2上似乎是五次。

这似乎不再适用于Windows 10，这是非常宽松，如果你不提供它产品密钥反正。 此选项在旧版本的Windows上仍然有效，并且可能会在未来的其他版本的Windows（例如Windows Server）上继续使用。

Slmgr.vbs可以对远程计算机执行操作，太多

Slmgr通常执行您在当前计算机上指定的操作。 但是，如果您可以访问网络上的计算机，也可以远程管理它们。 例如，以下第一个命令适用于当前计算机，而第二个命令将在远程计算机上运行。 您只需要计算机的名称，用户名和密码。

Taylor Gibb is a professional software developer with nearly a decade of experience. He served as Microsoft Regional Director in South Africa for two years and has received multiple Microsoft MVP (Most Valued Professional) awards. He currently works in R&D at Derivco International. Read more.

Do you have an old PC you want to sell, but also want to use your Windows license on your new PC ? There is a hidden command in Windows that allows you to do just that. Read on to find out more.

Note: Between Microsoft and your OEM there are a number of different laws that determine whether you are allowed to use your license on another PC, so follow this tutorial at your own risk. Additionally before you go through the tutorial you will want to check that your product key is still attached to your PC/Installation CD, if it is not , do a quick Google search on how to recover it.

Uninstalling Your Product Key

The first thing we need to do is get our activation ID, to do this fire up an administrative command prompt and run:

Windows will open a message box and tell you a bunch of information about the license status of your PC, take note of your activation ID.

To uninstall your product key you need to use the /upk switch, along with your activation ID:

slmgr /upk 507660dd-3fc4-4df2-81f5b559467ad56b

If you do it correctly you will be told that your product key has been uninstalled.

Installing Your Product Key

Installing your product key on your new PC is just as easy, all you need to do is fire up an administrative command prompt and use the /ipk switch.

If your key is valid you will be told that your key was installed.