Slmgr check activation

Microsoft advises you to restart the computer after running this command in order to fully apply the new key. 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.

Slmgr also allows you to perform an offline activation. To get an installation ID for offline activation, run the following command:. This allows you to activate Windows systems without Internet connections. Windows has a 30 day free trial period for every product, post which users need to activate the product by submitting a license key obtained after the product is purchased. Slmgr rearm command resets this countdown timer to zero and thus the user gets an extension of 30 days for activating the product.

Although it may seem that 30 days is a period not enough, the same command can be used upto3 three times to reset the clocks. Hence, you effectively get 90 days of extended lifetime period plus 30 days initial grace period making a total of days! 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. Rearming the system, restores it to its initial status, thereby resetting all grace period timers, too. SkipRearm is the original registry entry accessed via using the command slmgr rearm. It seems different on different versions of Windows—it was three times on Windows 7, and it seems to be five times on Windows Server R2.

This option still works on older versions of Windows and may continue to work on other editions of Windows, such as Windows Server, in the future. Sometimes after entering the slmgr -rearm command , an error is displayed stating that the command is not working. There may be various reasons leading to this error and hence the user should not expect to use one trick and get the issue resolved.

Some of the possible reasons are discussed below along with their solutions. If you are familiar with the reason use a specific solution, otherwise use the tricks in the order specified. Best eReaders. Best VPN. Browse All News Articles. Baby Shark YouTube. Venmo Gifts. Fortnite iPhone. Quest Headset SteamVR. M1 Mac Dropbox. Windows 11 Uninstall Clock. Teams Walkie-Talkie. PCI Express 6. Use Your iPhone as a Webcam.

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Tim Fisher. Tim Fisher has more than 30 years' of professional technology experience. He's been writing about tech for more than two decades and serves as the VP and General Manager of Lifewire.

Tweet Share Email. Defaults to the local machine if omitted. Replaces the current product key if present. Was this page helpful? Thanks for letting us know! Email Address Sign up There was an error. Please try again. You're in! Thanks for signing up. There was an error. Tell us why! More from Lifewire. How to Open an Elevated Command Prompt. Your Privacy Rights.