Windows Activation Error 0x80070520 is one of the many Activation errors users encounter while switching to a new laptop or PC or upgrading to a newer version of ...

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

So I got a new computer and it is great. However, the copy of Win7 that I'm using is apparently an upgrade copy not a clean install copy so I can't activate it. Do I have any options other than nuking ...

Microsoft wants users to recertify Windows 7 using a new signature-based approach in addition to the key-based verification process Microsoft is revising the way it authenticates copies of Windows 7, ...