Hi!
I have one user (everyone else is fine – as far as I know) who can’t see the busyness of other users’ calendars. Can’t see them only in the desktop program Outlook 2016 and 2019. If you go to OWA – everything is correctly displayed on all other users’ calendars. That is, this problem is only for him and only for the Mapi over HTTP protocol.

Many operations were performed with him:
1. moved it to another postal base.
2. tried several other laptops (on which other users are doing well).
3. The user was specifically given the right to view another user’s calendar.
4. Rebooted all on-premise Excahnge servers.
5. In the Mapi and IIS logs, everything looks correct, without errors, all statuses are 200.
We have several on-prem exchanges (not Hybryd), all of the latest versions. Exchange 2019 CU 14 and last Hotfix.
I have already run out of ideas on where to look next.

​Hi!I have one user (everyone else is fine – as far as I know) who can’t see the busyness of other users’ calendars. Can’t see them only in the desktop program Outlook 2016 and 2019. If you go to OWA – everything is correctly displayed on all other users’ calendars. That is, this problem is only for him and only for the Mapi over HTTP protocol.Many operations were performed with him:1. moved it to another postal base.2. tried several other laptops (on which other users are doing well).3. The user was specifically given the right to view another user’s calendar.4. Rebooted all on-premise Excahnge servers.5. In the Mapi and IIS logs, everything looks correct, without errors, all statuses are 200.We have several on-prem exchanges (not Hybryd), all of the latest versions. Exchange 2019 CU 14 and last Hotfix.I have already run out of ideas on where to look next.  Read More

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