Shared Outlook.com calendar doesn't show event details

Question

Shared Outlook.com calendar doesn't show event details

Daniel Bender 0

My family members each have Outlook.com accounts (well, one Hotmail, but that shouldn't matter here) and share calendars with one another. Recently, when looking at the calendars on their devices, my wife and older son can't see any details about events, only Free/Busy/Tentative. My younger son and I have no such issue, and can see everything just fine.

Here are the calendars as seen on Outlook.com for my account and my wife's, for the same time period:

Dan-right

We all do most calendar editing using the iOS native calendar app, but my wife has also checked it on iOS Outlook app and my son has confirmed the same behavior on Outlook desktop. I show the Outlook.com web app since that's where any sharing controls I'm aware of live.

My gut says that this is due to some setting on my end (as the calendar owner) stored on the server, but I'm unable to find any setting that controls it on either Outlook.com or on the desktop:

Dan-options Dan-sharing

What I have tried to do is "trash" their sharing, then send a new sharing invitation. This appeared to work and details were visible while the calendars re-synced, but when that finished they reverted to the bad state. I'm at a loss as to what else I can try.

So...

What is causing this problem?
Why are only half of us seeing it?
How do I fix it? Or, how do YOU fix it?
How do I prevent it from happening again?

Thanks for your help

-Dan B

Daniel Bender 0 Reputation points

2026-06-13T02:17:45.8233333+00:00

AI Answer gave an answer about Outlook Classic not syncing correctly, but was was very unclear about whether it meant "Outlook Classic can't pull the data from the server correctly" or "Outlook Classic corrupts the data on the server". It was very verbose and I refused it.

Afterwards, I ensured Outlook Classic was NOT open on my computer and created a new event using Outlook on the Web, and it appears with full details on other calendars. Same with another event edited on the Web.

So I guess the problem is that Outlook Classic is tainting the events on the server, but only for some other users, not all.

The question is now: How do I fix all the events in my calendar, short of opening each of them on the Web and editing them so they're updated? And when can we expect a fix to Outlook Classic so that it doesn't do that?