I have a customer who's having problems with Outlook 2010 hanging almost as soon as the main Outlook window opens after the splash screen. Outlook remains in a non-responsive state for around 10 minutes before coming back to life and appearing to behave normally.
This customer uses Outlook to connect to their Exchange Online (Office 365) mailbox. This issue began the day after we received an email from Microsoft informing us that they’d completed our Office 365 service upgrade so I'm inclined to think the issue has been caused by the upgrade.
We noticed that some of the server settings in Outlook have automatically changed and look a bit odd. For example, where the server used to appear as something like amxprd0513.mailbox.outlook.com it's changed to a long GUID followed by the customer's public domain name, like 7306b7a4-fbaf-407c-8d03-0cb73b1fed75@ourdomain.com.
There's only one other mailbox user but they don't seem to be having the same problem.
I’ve spent a lot of time on this and, frankly, I'm now at a loss. Here's what I've tried so far, none of which have made any difference:
- Open Outlook in safe mode
- Scanned the OST file using ScanPST.exe and repaired any errors found
- Created new Outlook profile with autoconfiguration via autodiscover
- Checked system for any suspicious software/infections
- Performed repair of Microsoft Office via add/remove programs
- Re-ran Office 365 desktop setup tool
- Applied all available Windows/Office updates
- Uninstalled Office software via add/remove programs and followed manual removal instructions at http://support.microsoft.com/kb/290301 to ensure clean removal
- Reinstalled Office and configured Outlook profile manually as per http://community.office365.com/en-us/forums/158/t/10651.aspx
This is a Windows 7 64-bit system running Office 2010 Professional Plus (via subscription).
Any help will be greatly appreciated!
Thanks,
David
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