Tessian incident

M365 Add-In: Silently failing checks for a subset of users

Major Resolved

Tessian experienced a major incident on December 2, 2025, lasting 1d. The incident has been resolved; the full update timeline is below.

Started
Dec 02, 2025, 03:29 PM UTC
Resolved
Dec 03, 2025, 03:51 PM UTC
Duration
1d
Detected by Pingoru
Dec 02, 2025, 03:29 PM UTC

Update timeline

No vendor updates were posted for this incident — only the open and resolve events were observed.