SUMMARY Events from an O365 calendar accessed via EWS resource are not shown in KOrganizer, Merkuro or the clock widget. Events from the same O365 calendar accessed via DAVmail are shown. STEPS TO REPRODUCE 1. Set up an EWS resource for an O365 account. 2. Make sure e-mails show up in KMail. For extra comparison, set up DAVmail for the O365 account, and set up a CalDAV resource for the same calendar. OBSERVED RESULT In KOrganizer, Merkuro or the calendar widgets the EWS resource shows no events, while the CalDAV resource does. In addition, when right-clicking the EWS resource in Merkuro, the gear icon spins forever and nothing happens. EXPECTED RESULT KDE apps should show events from the EWS resource. SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20231026 KDE Plasma Version: 5.27.9 KDE Frameworks Version: 5.111.0, KOrganizer 5.24.2 (23.08.2), Merkuro 23.08.2 Qt Version: 5.15.11 Kernel Version: 6.5.8-1-default (64-bit) Graphics Platform: Wayland ADDITIONAL INFORMATION