I am unable to open users mailbox when using outlook. Error says ÃƒÂ¢Ã‚Â€Ã‚ÂœUnable to open your default e-mail folders. The Microsoft exchange server is not availableÃƒÂ¢Ã‚Â€Ã‚Â. Server pings by name and IP. OWA works fine. The event log below shows the error that is logged in event viewer on exchange server. No other users affected. This happens on multiple machines with this user. I have deleted the mail profile on the workstation and re-added several times. I have applied the suggested registry fix that increases the number of default concurrent MAPI sessions from 32 to 64 and this has not helped. This has happened in the past with other users and eventually the only thing that solved it was giving the user exchange admin privileges. Obviously this is not a permanent or feasible fix. Please help.
Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 9646
Time: 2:06:23 PM
Mapi session "/o=Company USA First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recip
wardroup" exceeded the maximum of 32 objects of type "session".
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp