IRM is used to protect emails and documents against information leakage. Users in your company can use IRM by choosing an IRM template in New Email window at Outlook. However, they may get this error when they hit Permission button in Options menu.
No logged on Office users are configured for Information Rights Management (IRM)
It is a known issue of Office 2013. As stated here, follow these steps to solve the problem:
- Open Registry Editor (
Start > Run > regedit)
- Go to this container:
- Delete this registry key:
If you don’t see that registry key like it was in my case, simply add it.