Do you know what Slmgr is and what the purpose of it is?
Lets see more details.
How to Use the Slmgr command in Windows 10/11?

As we mentioned before, Slmgr is a tool related to Windows license management.
That way, we can use it to manage Windows activation.
Next, we you show you how to use Slmgr to install, activate, or extend Windows license.

Below are the steps.
Step 1: Typecmdin Windows search box, right-smack the result, and chooseRun as administrator.
Step 2: When theUACwindow appears, clickYesto initiate the administrator Command Prompt window.
![]()
bang out theslmgr.vbs /dlicommand into theCommand Promptwindow and hitEnter.
you’re free to also verify if the current system is activated.
fire off the slmgr.vbs /xpr command to view the expiration date of the current license.
Step 1: Use theslmgr /upkcommand to uninstall the old product key.
Step 2: Then run theslmgr /cpkycommand to remove the related registry entry.
Also read:Complete Guide: How to Find Windows 10 Product Key
3.
Activate or Deactivate Windows License
Heres how to activate the Windows system using the Slmgr tool.
Running theslmgr /atocommand canactivate Windows 11online and theslmgr /dtione is for offline activation.
Then you oughta activate the system by an activation ID.
This way, you could runslmgr /atp Activation IDto activate the Windows system without an internet connection.
Typically, online activation is recommended if you face some troubles when activating the operating system from Windows configs.
it’s possible for you to also runslmgr /upkto deactivate your Windows licese.
Extend Windows License
The Slmgr utility can also help you extend your Windows License.
spin up the following commands in turn to extend the license.
Just in case, you may want to protect your important data.
And the best way to that is to back up them.
Here we recommend choosingMiniTool ShadowMakerwhich is a reliable backup software.