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 ...

When Microsoft first launched the Windows operating system, installing it was only a matter of copying the program onto a disk. You didn't have to verify your copy of Windows. Starting with Windows XP ...

Phone activation for Windows has been discontinued. You'll have to use an online portal to activate Windows. The portal requires a Microsoft or business account. Microsoft has typically offered a few ...