If you see any of these errors
You cannot open this document because we cannot set up your computer to open documents that have restricted permission.
The Rights Management client returned the following result code: 0x80004005(-2147467259).
The Rights Management client returned the following result code: E_DRM_SERVICE_NOT_FOUND.
The Rights Management client returned the following result code: E_DRM_BIND_VALIDITY_TIME_VIOLATED.
Check out http://support.microsoft.com/?kbid=979099
