These are the currenlty supported Windows versions this product can activate This product is made so when somone logs into the admin control panel they can issue a 6 digit code to a user and then that user can use that code to activate a specific version of windows as the admin wants them if you want to have a single exe for use then checkout Windows Activator (Single file)
- Windows 11
- Windows 10
- Windows 8/8.1
- Windows 7
- Windows Server 2022
- Windows Server 2019
- Windows Server 2016
- Windows Server 2012
- Windows Server 2008
If you would like to host your own KMS server visit https://home.nerdtown.cc/kms/server/ and follow the instructions When running the client make sure it is run as an administrator otherwise it will fail activation and installation.
Thanks to @Wind4 for the KMS server