GitHub outage on September 15, 2026: Disruption with some GitHub services
GitHub reported an incident affecting GitHub for 49 minutes on 15 September 2026, from 19:11 to 20:00 UTC.
Resolved
Official incident reported by GitHub
- Started
- 19:11
- 15 Sep 2026 UTC
- Resolved
- 20:00
- 15 Sep 2026 UTC
- Duration
- 49m
- 49 minutes
- Impact
- Minor
- as rated by GitHub
- Updates
- 3
- posted by GitHub
Timeline
All times UTC.
Official incident from GitHub
Disruption with some GitHub services
-
Official
Investigating
We are investigating reports of impacted performance for some GitHub services.
-
Official
Monitoring
The degradation has been mitigated. We are monitoring to ensure stability.
-
Official
Resolved
On September 15, 2026 between 15:30 and 20:00 UTC, some Copilot code reviews on pull requests failed to complete. The cause was increased latency in an internal caching service that GitHub Copilot Code Review relies on to coordinate its review jobs. This caused a timeout in lock acquisition, which interrupted the job. We reverted the change to the internal caching service and restored normal operation by 20:00 UTC. We sincerely apologize for the disruption.
"Official" rows are quoted from GitHub's public status page, www.githubstatus.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test github.com from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live GitHub status shows what our checks see right now.
Does your product depend on GitHub?
An outage like this one reaches your users through your product, and most teams hear about it from a customer rather than from a dashboard. HostTracker watches any endpoint you name - your own site, an API you call, a vendor you resell - from 300+ locations, confirms a failure from several of them before it says anything, and then tells you by email, SMS, voice call or your chat tool.
You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with GitHub. Official updates are quoted from GitHub's public status page and remain GitHub's own words.