The Software Licensing Service determined that the specified Key Management Service (KMS) cannot be used. What causes Windows Activation Error 0xC004F015? There can ...

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 ...

Facepalm: Microsoft is investigating a new activation issue that is affecting many Windows 10 and 11 PCs. The problem seems to have cropped up last month after the company pushed out an update to plug ...

Microsoft has released the KB5048652 cumulative update for Windows 10 22H2, which contains six fixes, including a fix that prevented Windows 10 from activating when you change a device's motherboard.

At least for now, though, it seems like this change will only apply to future Windows versions. We were able to activate a fresh Windows 11 Pro 22H2 install with a Windows 8 Pro product key as of this ...

Microsoft is closing the loophole that allowed older Windows product keys to activate Windows 10 and Windows 11. This loophole has existed since Windows 10 first launched as a "free" upgrade for ...