This is to reset the Windows activation timers so the new users will be prompted to activate Windows when they put in the key. Office Office Exchange Server. Not an IT pro? United States English. 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.
You can use slmgr. 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. Microsoft advises you restart the computer after running this command. By default, this refers to the current Windows edition and is primarily useful for KMS clients, because MAK and retail activation is perpetual.
For retail installations that deploy keys, best practices recommend running this option. This option is required only for other types of keys whose default behavior is not to clear the key from the registry. This operation must be run in an elevated Command Prompt window. This option installs the license file specified by the required parameter. These licenses may be installed as a troubleshooting measure, to support token-based activation, or as part of a manual installation of an on-boarded application.
Licenses are not validated during this process: License validation is out of scope for Slmgr. Instead, validation is handled by the Software Protection Service at runtime. These are "known-good" copies that were stored during installation. Any matching licenses in the Trusted Store are replaced. This operation must be run in an elevated Command Prompt window, or the Standard User Operations registry value must be set to allow unprivileged users extra access to the Software Protection Service.
This option resets the activation timers. See Registry Settings for Volume Activation for details about this registry entry. This option uninstalls the product key of the current Windows edition. After a restart, the system will be in an Unlicensed state unless a new product key is installed. This operation must be run from an elevated Command Prompt window. This option specifies the name and, optionally, the port of the KMS host computer to contact.
Setting this value disables auto-detection of the KMS host. IPv6 addresses contain colons : , which the Slmgr. This option removes the specified KMS host name, address, and port information from the registry and restores KMS auto-discovery behavior.
This option enables KMS host caching default. If the system can no longer contact the working KMS host, the client tries to discover a new host. You might be asked for an admin password or to confirm your choice. Enter your Windows 7 product key when prompted, select Next , and then follow the instructions. Select Use the automated phone system. Windows 7 Windows 8. To activate Windows 8. Choose Activate Windows.
Support for Windows 7 ended on January 14, We recommend you move to a Windows 11 PC to continue to receive security updates from Microsoft.
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