MS Outlook 2010 Crashing When Openng a New Email

This is a very recent/today issue that didn't exist this morning but was noticed later in the afternoon.

I have a WIn 7 Pro machine with MS Office Professional 2010, including Outlook 2010 installed and operating for several years without issue.

I have made no changes or installed any software other than a Windows update which installed itself recently.

This morning I received several new emails from know senders which I opened and in some cases replied to.  This afternoon I received an email in the Inbox from a known sender.  When I tried to open it Outlook crashed.  I reopened outlook and everything else seemed fine, except Outlook hadn't retained my visual settings.  The Outlook screen was smaller than I set it and Outlook was displaying on my left dual screen instead of the right dual screen, which is where I had it set.  I could reopen and reply to any other email that had been opened previously (pre-crash).

I deleted the problem email, shutdown and restarted the machine and continued.  The next time I received a new email, again from someone I email regularly, I tried to open it and once again Outlook crashed.  Each time Outlook opens it is smaller, the screen is smaller and on the left monitor instead of the right.

Since the first crash this scenario has repeated itself for every email I receive on the Win 7 Pro, MS Office Pro 2010 machine.

I opened MS Office 2010 Pro and ran a repair but the problem persists.

I have several other machines (Win 7 and Win 8 Pro) in the Office running MS Office 2013 Pro and Outlook functions just as always on them.  No issues receiving or opening new emails.

In the meantime I am running a Malwarebytes scan and a McAfee Virus scan.

Any other ideas on how to resolve this issue or what the issue might be
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mlcktmguyAsked:
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Muhammad BurhanManager I.T.Commented:
try with removing signature if any
also please check the PST's size
mlcktmguyAuthor Commented:
Thanks, no signatures but I think you're on target with pst size.

The size of archive.pst was 2.1GB.  I removed at least 200MB of emails with attachments but the size shown in Windows explorer did not go down.  Any idea why?

Outlook.pst is about 1.4 GB and I removed many mails with large attachments there also.

What are the maximum size of the pst's?  Is there any way to increase the allocation?
Muhammad BurhanManager I.T.Commented:
Theres nothing to do with pst in your scenario, Outlook supports 50GB.
Give a try with configuring a new account, move its default pst in another partition.
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JohnBusiness Consultant (Owner)Commented:
Try uninstalling KB3097877 (Windows Updates). After removal, shut down, start up and test Outlook. Does it start?

If it does, close Outlook, run Windows Updates again (because KB3097877 was replaced this morning), restart as requested and then test Outlook again.
mlcktmguyAuthor Commented:
Thank you.  It sure seemed to happen after I installed Windows Update.  How do I uninstall KB3097877?
JohnBusiness Consultant (Owner)Commented:
Close Outlook, open Windows Update, look in Installed Updates, look for KB3097877 and click on uninstall. Wait, close out, restart and try Outlook.

Now KB3097877 was replaced, so if Outlook is now working, close everything, run Windows Update again, restart and test Outlook again. My Outlook is working after this.

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mlcktmguyAuthor Commented:
Excellent
JohnBusiness Consultant (Owner)Commented:
@mlcktmguy - You are very welcome and I was happy to help.
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