Enter Your User Name And Password - To Download Https Calendars.office.microsoft.com ((top))

The recurring "enter your user name and password to download" prompt for calendars.office.microsoft.com typically occurs when Microsoft Outlook fails to authenticate a shared or internet-subscribed calendar. This issue is often caused by corrupted cached credentials, incorrect account security settings, or specific bugs in the way Outlook handles shared calendar data. Why the Prompt Appears