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Avatar of 🔐 Peter GEELEN
🔐 Peter GEELENFlag for Belgium

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Shared Calendar details not shown in Microsoft 365 group agenda

I recently migrated the family's mail boxes from IMAP to M365, incl. content…

Now everyone has their own agenda, and I also created a common agenda through an M365 group.

I have 1 admin account without license (as tenant root admin) and then 4 office user accounts with license.

Bizarre is only 3 of 4 users see the shared calendar details, while all 4 users are members of the shared calendar/ M365 group (root admin = owner of mailbox)...

For 3 users, it works as expected. But for myself (as a mailbox user, not admin), I only get to see the free/busy info from the common agenda… not the full details…

The agenda sharing policy has been set to full details...
I also checked the delegated permissions and removed the trouble user from the group and added the account again...

Do you have any suggestion or an idea what I did wrong in the setup?
Any suggestions for troubleshooting and/or solving the issue?

Kind regards,
Avatar of Vasil Michev (MVP)
Vasil Michev (MVP)
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Check via OWA first, to exclude any issues with the local Outlook cache. Also, can you clarify what type of group you are referring to? If Microsoft 365 Group, you should not be adjusting the permissions directly, that's not supported scenario. Instead, each member of the group gets access when added to its membership list, and you have some options to restrict editing to "owners" only.
Avatar of 🔐 Peter GEELEN


It looks like you're right on the Outlook cache...

Outlook client
User generated imageOWA
User generated image
yes, It's an M365 group.

I did not change permissions directly, only via group options, only added users as member, and set the general sharing policy to allow access to agenda details. No custom permissions.

Thinking about the cache problem you mentioned...

So, I need to disable and re-enable caching then?
I suppose,
  1. disable cache, restart outlook, 
  2. enable cache and restart outlook?
When I disable cache, restart outlook client, the agenda still does not match... (and appointment details still hidden...)

Do I need to reset the client or account configuration more aggressively?

Avatar of 🔐 Peter GEELEN
🔐 Peter GEELEN
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

-- '✔Peter GEELEN' (https:#a43325117)
-- 'Vasil Michev (MVP)' (https:#a43325144)

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