Microsoft manual Appendix 2 Troubleshooting by Error Code, Mak/Kms

Volume Activation 2.0 Operations Guide

Appendix 2: Troubleshooting by Error Code

The following table provides troubleshooting help when using volume editions of Windows Vista and Windows Server 2008 operating systems.

Error Code	Error Message	Activatio	Possible	Troubleshooting Steps
		n Type	Cause
0xC004C001	The activation server	MAK	Invalid MAK	Verify the key is the MAK provided by Microsoft.
	determined the specified		entered.	Contact the Microsoft Activation Call Center to
	product key is invalid
				verify the MAK is valid.
0xC004C003	The activation server	MAK	The MAK is	Contact the Microsoft Activation Call Center to
	determined the specified		blocked on the	obtain a new MAK and install/activate the system.
	product key is blocked		activation
			server.
0xC004B100	The activation server	MAK	The key is	Verify the key is the MAK provided by Microsoft.
	determined that the computer		unsupported.	Contact the Microsoft Activation Call Center to
	could not be activated.
				verify MAK is valid.
0xC004C008	The activation server	KMS	The KMS key	KMS keys will activate up to 10 times, on 6
	determined that the specified		has exceeded	different computers. If more activations are
	product key could not be		the activation	necessary, contact the Microsoft Activation Call
	used.		limit.	Center.
0xC004C020	The activation server reported	MAK	The MAK has	MAKs by design have a limited number of
	that the Multiple Activation		exceeded the	activations. Contact the Microsoft Activation Call
	Key has exceeded its limit.		activation limit.	Center to obtain a new MAK or increase the limit on
				existing MAK.
0xC004C021	The activation server reported	MAK	The MAK has	MAKs by design have a limited number of
	that the Multiple Activation		exceeded the	activations. Contact the Microsoft Activation Call
	Key extension limit has been		activation limit.	Center to obtain a new MAK or increase the limit on
	exceeded.			the existing MAK.
0xC004F009	The software Licensing	MAK	Grace period	Follow the Reduced Functionality Mode (RFM)
	Service reported that the		expired before	recovery guidelines in the Volume Activation 2.0
	grace period expired.		system was	Operations Guide.
			activated, now
			system is in
			RFM mode.
0xC004F00F	The Software Licensing	MAK/KMS	The hardware	MAK - Reactivate the system during the Out of
	Server reported that the	client/KMS	has changed or	Tolerance grace period using either online or phone

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