The Software Licensing Service determined that the specified Key Management Service (KMS) cannot be used. What causes Windows Activation Error 0xC004F015? There can ...
This is what you need to do first when you get Windows activation issues on Windows 11 or Windows 10 computers. To activate Windows with a digital license, you must have a valid internet connection.
Microsoft has blocked the popular Massgrave KMS38 activation method with the November 2025 Patch Tuesday update.
Microsoft’s latest Windows 11 cumulative update (KB5068861), released on November 11, 2025, is reportedly failing to install ...
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