If you're running Windows Server 2008 as your KMS host, you need this update hotfix 968912. An update is needed for the KMS host running on Windows Server 2003 and an update is needed for the KMS host running on Windows Server 2008 to be able to activate KMS clients that are Windows 7 or Windows Server 2008 R2. Most commonly, we're seeing this error when the KMS host is running on Windows Server 2003 or Windows Server 2008 and the KMS client is Windows 7 or Windows Server 2008 R2.
Support version mismatch between KMS client and KMS host machine A time difference between the KMS client and the KMS host machine.A support version mismatch between the KMS client and the KMS host machine.This error can occur for one of the following reasons: In the application event log on the KMS host, you see the following event: Log Name: Key Management Service In the application event log on the KMS client, you see the following event: Log Name: Application When trying to activate Windows 7 or Microsoft Windows Server 2008 R2 KMS client machines, you may get this error message:Īt the same time, the following entries may get logged in the KMS Event Log on the KMS client and the KMS host. The Key Management Server (KMS) is unavailable Please see the Application Event Log for additional information. No Key Management Service (KMS) could be contacted. When you try to activate Windows, you may get error 0xC004F074 and one of the following error messages:ĠxC004F074 with description "The Key Management Server (KMS) is unavailable"Įrror: 0xC004F074 The Software Licensing Service reported that the product could not be activated. This article helps fix the error 0xC004F074 that occurs when you activate Windows.Īpplies to: Supported versions of Windows Server and Windows Client Original KB number: 974998