Over Internet you can find a lot of articles talking about one thing – NOT TO INSTALL IE7 on server machines :).
One of the reasons is a crash of Exchange System Manager (ESM).
Exchange System Manager (ESM) crashes when you press F1, or click on the Help menu option.
As result, inside Event Viewer you will see an Event ID 1000.
I really don’t want to recommend you uninstall IE7. The solution for this “issue” is very simple, remove (rename) the PSAPI.DLL from the Exchsrvr\bin subdirectory:
- Stop the Exchange System Attendant Service
- Stop the IIS Admin Service
- Open a Command Prompt rename the PSAPI.DLL in the exchsrvr\bin directory. to PSAPI.DLL.OLD
- Restart the Exchange and IIS services.