Elizabrisb

I was under the impression that this "let users access third party apps in your tenant" was all encompassing and would disable all 3rd party apps / add-ins for all o365 apps.

If both are signed in simultaneously, the system can confuse the authentication path.

Service availability and response times may vary.

It seems like something went wrong on Microsoft update and they might recall it or fix it, so we might need to wait untill that.

We recommend that you move several items in your larger folders to separate folders, or that you archive those items by using the AutoArchive feature.

If the Inbox Repair tool has failed to repair the PST file, it means that the file is large (larger than 2 GB) or severely damaged.