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I noticed that all my calendars were gone in the Android calendar app and found the reason is, for some reason, the option to sync calendars for my outlook.com account has been turned off in the Outlook app. I turn it back on and within minutes my calendars are populated again, but then hours later it gets turned off again. This started happening in the past few weeks.
Anyone else having this problem?
Using Outlook for Android in business environments for email and scheduling
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Having the same issue. Tried all the solutions mentioned here but still turning off calendar sync multiple times per day.
4.2312.11 from APK Mirror solved my problem. Sync has been working now for 5 days.
Samsung S22
https://www.apkmirror.com/?post_type=app_release&searchtype=apk&s=outlook+4.2312.11
Having the same problem as well
Same result for me but from Play Store (I'd not heard of APK Mirror before).
Downloaded and will give it a try