: It creates a virtual KMS server on your PC to trick Office into believing it is being validated by an official Microsoft enterprise network. Offline Activation

a third-party tool designed to bypass activation for Microsoft products like Office 2016 using an emulated Key Management Service (KMS)

If you are having trouble with your Office 2016 activation, you can use these official methods: Run OSPPREARM.exe

: Temporarily disable real-time protection in Windows Defender or your antivirus.

: Bypassing Microsoft's genuine authentication mechanism violates their Terms of Service and intellectual property laws. System Instability