All of a sudden this morning, I encountered this error when trying to navigate mail in Microsoft Outlook 2019:
This seems to affect all of my accounts except for the primary account, which is an Exchange account.
I did some research and came across tips like this one: https://www.msoutlook.info/question/518
However, I deleted an entire IMAP account from Outlook and the problem persisted, even after numerous restarts and ensuring the process had been killed. Up until this morning, everything had been working fine reasonably well so this has me puzzled. (I say reasonably fine because this is by no means the only headache that Outlook 2019 has given me.)
I primarily use the MailNews client for email, not Outlook, for email specifically, and I have no issue with my accounts in there, obviously, since it uses the MBOX format. Unsurprisingly, I don't encounter the issue with Outlook 2010 on Windows 7, either.
Is there a clear cause or fix for this? I'm really at my wits end with the newer versions of Office. Combining OST or PST files here is not an option. I have probably around 20 GB of email, so I don't want to purge all the caches or delete the accounts and add them again if I can avoid it.
