When Outlook calendar permissions do not update, the owner and the recipient are often looking at two different states. The owner may have saved a new permission level, while the recipient still sees an old cached calendar or accepted the share with another account.
Use a single calendar and a single recipient for the first test. If mailbox loading is also unreliable for the same Outlook profile, compare that behavior with the Outlook mailbox loading checks before treating the calendar permission as isolated.
Check the permission from the calendar owner side
Ask the owner to open the calendar permissions and confirm the recipient’s exact entry. Do not rely on memory of what was shared earlier. Look for duplicate recipient entries, old external addresses, or a group permission that does not apply to the person testing.
- Confirm the calendar owner is editing the correct calendar.
- Remove duplicate or stale recipient entries if they exist.
- Set the permission level again and save it.
- Send a fresh sharing invitation if the recipient cannot see the calendar at all.
If the owner changed from view-only to edit access, have the recipient close the calendar and reopen it. Editing rights may not appear inside an already-open calendar view.
Check what the recipient sees on the web
The recipient should test the shared calendar in Outlook on the web with the account that received the invitation. If the new permission works there, the server-side share is correct and the desktop Outlook view is stale.
If Outlook on the web still shows the old permission, ask the owner to remove the recipient, save, add the recipient again, and send a new invitation. That is cleaner than repeatedly changing the permission level on a stale share.
Refresh the local calendar view carefully
Once the web result is correct, refresh desktop Outlook without rebuilding the profile. In new Outlook, close and reopen the app, expand the calendar group, and reselect the shared calendar. In classic Outlook, remove the shared calendar from the view and add it back from the address book or sharing invitation.
- Confirm the permission works in Outlook on the web.
- Close desktop Outlook.
- Reopen the shared calendar from the current invitation or directory.
- Test one action that matches the new permission level.
If the calendar still refuses to sync after the permission is correct online, use the Outlook calendar sync checks to focus on local client refresh rather than permission editing.
Questions before you remove the share
Why does the owner see the new permission but I still cannot edit?
Your Outlook client may still be showing a cached copy, or you may be viewing the calendar with a different account than the one the owner shared with. Test in Outlook on the web first.
Should the owner remove and add me again?
Yes, when the web version still shows the wrong permission after the owner saves the change. Removing and re-adding the recipient is often cleaner than editing a stale entry repeatedly.
Why does classic Outlook behave differently from new Outlook?
They can refresh shared calendars differently. Use Outlook on the web as the neutral comparison, then refresh whichever desktop client is stale.
The practical route is owner setting first, recipient web test second, and local Outlook refresh last. That order prevents profile repairs when the real issue is an old sharing entry.