It's puzzling to me that you both agree that it was not likely my "repair" actions in Avast that caused my Outlook problem.
Well... we're trying to think a solution for your trouble and really, avast repair doesn't seem to be the guilty here.
Are you sure that you didn't send the files to Chest? Or delete them instead of repairing?
I find it highly coincidental that something other could have happend simultaneously.
I can't say that it's a coincidence... could be
another action that you've taken but you're not remembering or you did not pay that attention to it... could be an Outlook trouble...
Well, we're trying to help you to solve the problem and not to find the guilty party, but, if we can discover who is guilty here, maybe it's easier to help...
What else could have caused this specific file to no longer be accessed if not the "repair"?
That is what we're trying to discover...
However, could Avast's repair function have renamed these files or moved them causing Outlook to not recognize them or find them?
No. Repair is repair, not rename or move.
I am not able to check whether or not the Avast plug-in is disabled as Outlook is no longer opening and simply freezes and at times locks up the whole computer, I do however see the Avast badge appear attached to the Outlook badge when I do try to launch Outlook, indicating to me that Avast is being launched in conjunction with Outlook. I also tried to disable Avast and then launch Outlook but that did not help.
Please, go to Control Panel > Add/Remove programs > avast! antivirus > Remove. Then choose 'Change' function in the popup window and uncheck the Outlook/Exchange plugin.
Boot. Try to open Outlook again.