Microsoft has officially retired the traditional phone-based activation system for Windows (and MS Office) that served as a ...

Before we start, the first thing you need to make sure that you got the keys from a genuine seller or source. If the key was given to you by an online site because it was priced less, then chances are ...

The Software Licensing Service reported that the license could not be found or was invalid. The error code usually means that the user entered the wrong license key ...