Slack outage on December 9, 2025
Slack users likely saw failed connections, degraded availability, or session instability for this Productivity service. The incident reached Major severity and lasted 45 min. The stored report window does not show a preserved user-report spike.
Between 11:51 AM PST and 9:10 PM PST on December 2, 2025, some users experienced issues with the Slack search functionality. Affected users may have encountered a range of symptoms, including the display of incorrect search results, missing messages, noticeably degraded or slow performance, and in some cases, a complete failure to load any search content.We traced this back to a temporary, unexpected surge in resource demand that impacted a critical backend service responsible for processing search results. We increased resources for this service to mitigate impact and stabilize the search fun
Deterministic readout · awaiting AI summary pass
Incident detected
Major confidence crossed the incident threshold for Incident: Trouble with Search.
Marked resolved
The incident was closed after 45 min of observed impact.
No per-source signal payloads were preserved in this incident's snapshot window.
Confidence scoring
80.00The incident reached 80.00 peak confidence across available stored status snapshots.
User reports
0 / 15mNo elevated user-report volume was preserved in the incident window snapshots.
Status samples
0 affectedThe incident row exists, but the bounded snapshot window does not include affected status samples.
Recovery signal
ResolvedRecovery was recorded at Tue, Dec 09, 2025, 06:14 PM UTC.