Outlook Hangs All The Time, Disbabled All Plugins, Works In Safe Mode

Question

I am kind of at my wits end here.
A user has a very large mailbox, over 2 gigs.We have moved from Exchange 2003 to Exchange 2013 (hosted service, so not the same server.) But first I deleted the user's profile on the Windows 7 machine and recreated thinking his profile may be corrupt, but
only after removing the Exchange account from the box, repairing, uninstalling, upgrading from Outlook 2010 to Outlook 2013 and still  the computer get hung up using Outlook. I have gone in an disabled all plugins (except Exchange) and tried, no luck.
The only thing that seems to work is running Outlook in safe mode. What else could be causing this to happen?
Thanks
Vern

Answer 1

Hi Vern,
Since the issue does not occur in Outlook Safe Mode, it should be related to the third-party Outlook add-ins.
We can review the disabled add-ins list in Outlook safe mode, and disable all COM add-ins in Outlook cached mode then re-enable COM add-ins one-by-one until you found the add-in which cause the problem again. We can remove the add-ins by the following steps
in Outlook:
1. On the File tab, click the Options category.
2. Click Add-ins.
3. Select COM Add-ins from the Manage box, and then click
Go.
4. Click to clear the check box for any add-ins that you want to disable.
5. Click OK, and then restart Outlook.
About how to re-enable add-ins, please refer to Re-enabling COM add-ins one-by-onepart in the following KB:
http://support.microsoft.com/kb/2632425/en-us
Regards,
Winnie Liang
TechNet Community Support