ZCO keeps changing the default calendar in Outlook

[jamieoliver]

Hi everyone,
I’m having a weird issue with Zimbra Connector for Outlook. I have two calendars in my Outlook profile, and I set my Zimbra calendar as the default one. It works fine for a while, but after restarting Outlook, new appointments sometimes start going into the other calendar instead. The strange part is that the Zimbra calendar is still there and syncing normally. Nothing seems to be disconnected, but Outlook just stops using it as the default calendar. I’ve tried setting the default again and restarting Outlook, which fixes it temporarily. Then a day or two later, it happens again. Has anyone seen this with ZCO? I’m using Outlook on Windows 11 and would prefer not to recreate the whole profile if there’s a setting I’m missing.
Basketball Bros