< all_regressions
[BREAKS-PROD]
Exchange
Published calendar (.ics) returns HTTP 500 for calendar applications after September 2026 Exchange Server Security Updates, with no current resolution.
first seen 7/23/2026 · last seen 9/8/2026 · 12 reports · 3 admins
source_posts
- *Exchange Online outage causes email delays, 'Server busy' errors
Bleeping Computer · 0 pts · 0 comments
- *Microsoft Exchange Online outage causes email failures, auth issues
Bleeping Computer · 0 pts · 0 comments
- *Microsoft working to fix Exchange Online mailbox quarantine issue
Bleeping Computer · 0 pts · 0 comments
- *Russian hackers exploit Exchange OWA zero-day for long-term mailbox access
Bleeping Computer · 0 pts · 0 comments
- *Released: September 2026 Exchange Server Security Updates
Exchange Team Blog · 0 pts · 0 comments