KMS activations are not permanent; they usually expire every 180 days , requiring you to run the tool again.
Version v312 was a common final release during the peak usage of Office 2013, designed to be portable and compatible with then-current Windows versions like Windows 7 and 8. Critical Risks and Legality kmsmicro activator v312 final for microsoft office 2013
In a corporate environment, a company sets up a dedicated KMS host server. Every client computer (running Windows or Office) then connects to this internal server, rather than directly to Microsoft, to receive an activation license. This license typically lasts for , after which the client must reconnect to the KMS host to renew the activation. KMS activations are not permanent; they usually expire