Problem:
You open up OWA and you try setting up your Out of Office response but you get the following error:
“Sorry! We’re having trouble processing your request right now. Please try again in a few minutes.”
Solution:
ECP is not allowing Anonymous authentication.
- On the server, open up IIS
- Drill down until you can see ECP (Sites > Default Web Site > ECP)
- In the middle of the screen, look for Authentication
- Enable Anonymous Authentication
- Test