TBSync has started to fail when accessing Microsoft Outlook calendar

[jcs0596223]

Your environment Windows 10

TbSync version: 3.0.2 Thunderbird version: 91.8.1

Expected behavior

TBSync has always synchronised the Thunderbird calendar with my Microsoft Outlook calendar so it updated my Android phone calendar. ...

Actual behavior

Within the past few days this is asking for my account credentials. I have checked the credentials by logging into the MS account. My W10 calendar is still being updated. Something has changed. ...

Steps to reproduce

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