- Level
- confirmed
- Worst impact
- Degraded
- Components
- Codespaces
- Down Index
- 23of 100
What to do
Check whether you use GitHub Codespaces. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 5h 47m it lasted.
Anything that failed between 2026-03-12 13:06 UTC and 2026-03-12 18:53 UTC may need a replay.Subscribe to GitHub's feed to hear about the next one first. RSS feed
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Updates from GitHub 9
- investigating
We are investigating reports of degraded performance for Codespaces
provider
- investigating
We're investigating an issue where extensions fail to install in newly created Codespaces. Users can still create and access Codespaces, but extensions will not be operational, resulting in a degraded development experience. Our team is actively working to identify and resolve the root cause. We'll post another update by 14:00 UTC.
provider
- investigating
We are continuing to investigate an issue where extensions fail to install in newly created Codespaces. Users can create and access Codespaces, but extensions will not be operational, resulting in a degraded experience. The team is working on a fix. All newly created Codespaces are affected. We'll post another update by 15:00 UTC.
provider
- investigating
We have deployed a fix for the issue affecting extension installation in newly created Codespaces. New Codespaces are now being created with working extensions. We'll post another update by 15:30 UTC.
provider
- investigating
We're seeing partial recovery for the issue affecting extension installation in newly created Codespaces. Some users may still experience degraded functionality where extensions hit errors. The team continues to investigate the root cause while monitoring the recovery.
provider
- investigating
We're seeing intermittent failures downloading from the extension marketplace from codespaces and are investigating.
provider
- investigating
We're seeing intermittent failures downloading from the extension marketplace from codespaces, caused by IP blocks for some codespaces. We're working to remove those blocks.
provider
- investigating
Codespaces IPs are no longer being blocked from Visual Studio Marketplace operations and we are monitoring for full recovery
provider
- resolved
On March 12, 2026, between 01:00 UTC and 18:53 UTC, users saw failures downloading extensions within created or resumed codespaces. Users would see an error when attempting to use an extension within VS Code. Active codespaces with extensions already downloaded were not impacted. The extensions download failures were the result of a change introduced in our extension dependency and was resolved by updating the configuration of how those changes affect requests from Codespaces. We are enhancing observability and alerting of critical issues within regular codespace operations to better detect and mitigate similar issues in the future.
provider
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Corrections
None so far.
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Questions about DWN-a9b0dcc01e
Is GitHub still down?
No, this incident was resolved 2026-03-12 18:53 UTC. For GitHub's live state, see https://down.guide/github.
How long did it last?
5h 47m, from 2026-03-12 13:06 UTC to 2026-03-12 18:53 UTC, by the times GitHub posted.
What was affected?
GitHub named Codespaces.
What caused it?
GitHub hasn't published a root cause. If it does, it shows here.
Where does this come from?
GitHub's official status page, https://www.githubstatus.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.