Mail error the following
Users use MS Outlook via Microsoft Exchange Server

When you open the mail program MS Outlook hangs, the program does not open at all, white screen,Not working

when you close the program and then open next time

Message

Outlook has encountered the following serious error during the last run. Starting Outlook in safe mode will help you correct or isolate a startup problem to successfully start the program
Some functions in this mode can be disabled.


To start Outlook in safe mode?

Click Yes, and again hangs
What could be the problem and how to solve it?

What could be the source of the problem?

Will wait for a response