Question : Windows 7 - Windows could not be activated

I installed Windows 7 on a system. using our Enterprise MAK key.  It has been running fine for a while and now I am getting the following error.

Windows could not be activated
If you continue to see this error message contact your system administrator or technical support department for assistance.

Error:
0x4004F00C
The Software Licensing Service reported that the application is running within the valid grace period

Any ideas on how to get this to register properly?

Thank you,
Steve

Answer : Windows 7 - Windows could not be activated

It's happen to me before. Try Control Panel > System, hit Change product key, and enter your key (even if it's the same one you entered before). It should activate fine after that.