Outllok 2010 Calandar closes for no reason

Have a reoccurring action in Outlook 2010.  I changed one of the appointments to be 1 hour earlier for the single case, not all reoccurring action. Can not make any changes to that action any longer. Every time I try to change it or delete it or edit it, outlook stops working and closes the action.
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JohnBusiness Consultant (Owner)Commented:
Try running Office Repair from Control Panel.

If this is POP (not Exchange), try repairing the PST file with SCANPST.EXE (which is in the Outlook Program Folder) .

And if neither of the above two work, set up a new, test Windows User Profile (Account) and test Outlook in the new Windows account.
Jeff LewandowskiCommented:
You can also try ending the Outlook.exe process in task manager.  Then, Outlook should start in safe mode.  Then close and reopen in regular mode and see if you still have the same issue.
Snowden1Author Commented:
Outlook is 2010 and is not a POP, but exchange.  I couldn’t find an Office Repair in Control Panel.

I did end the Outlook.exe process in task manager.  It did not start in safe mode, reopened in regular mode and he issue still persists.
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JohnBusiness Consultant (Owner)Commented:
The Repair is for Office (not just Outlook). Go to Programs and Features and click on Office. Select Repair.

Also remember the new Windows Account to try.
Snowden1Author Commented:
Repair did not work. Before I create a new profile, what impact will that have on anything attached to the old profile?  Stationary, signature, calendar, tasks, etc.?
Jeff LewandowskiCommented:
***Backup the PST before making any changes.

1.  Did you try a PST repair, or just an office repair?  https://support.microsoft.com/en-us/kb/272227

2.  Try running the Outlook diagnostics tool - https://support.microsoft.com/en-us/kb/2934538

3.  You can create a new Mail profile without affecting the current one.  Create the new Mail profile and then import the pst file.
Snowden1Author Commented:
In combination with a new profile, I set system recovery to a date prior to the problem occurring which appears to have solved the issue.

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JohnBusiness Consultant (Owner)Commented:
So all is working fine now? Sounds like it.
Snowden1Author Commented:
Yes. Thank you all for your help.
JohnBusiness Consultant (Owner)Commented:
So you probably should close the question at this point.
JohnBusiness Consultant (Owner)Commented:
You said a new profile helped, so it seems you should have split the points.
Snowden1Author Commented:
No one suggested a system restore.
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