Information Rights Management (IRM): %1 could not be associated as a Rights Management Services (RMS) user. User: %2 Current ...

Information Rights Management (IRM): %1 could not be associated as a Rights Management Services (RMS) user.
User: %2
Current file: %3
GUID of current list: %4

The most probable cause is that the user's email address is not associated with the RMS server.  Until registered, this user cannot consumer or view IRM protected content.

Additional Data
Error value: %5