GitHub reports multiple service issues

GitHub is dealing with 2 concurrent service issues — tracked live below.

By The Downtime · Jul 21, 2026 · 11:15 AM ·Updated 1 month ago

GitHub is investigating reports of intermittent SSH authentication failures affecting connections that use deploy keys. Customers may experience failed SSH connections when interacting with repositories via deploy keys. The incident is marked as critical and remains under investigation.

GitHub is a widely-used platform for version control and software development collaboration, relied upon by millions of developers and organizations worldwide.

GitHub's engineering team began investigating reports of impacted performance for some services and subsequently identified intermittent SSH authentication failures tied to deploy keys. The company is actively working toward resolution but has not yet identified the root cause.

This is a developing story. We will update this post as more information becomes available.

⚠️ Issues being tracked (2)

Some SSH connections using deploy keys are failing

Resolved

source ↗

Disruption with GPT 5.3 Codex

Resolved

source ↗

🕒 Live updates (10)

resolved Some SSH connections using deploy keys a... Jul 21, 11:57 AM

This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.

investigating Some SSH connections using deploy keys a... Jul 21, 11:46 AM

We have identified a recent code change as a potential cause of the SSH authentication failures affecting deploy key connections. Our engineering team is rolling back this change. Customers using deploy keys for SSH access to repositories may continue to experience intermittent connection failures until the fix is deployed.

investigating Some SSH connections using deploy keys a... Jul 21, 11:04 AM

We are investigating reports of intermittent SSH authentication failures affecting connections that use deploy keys. Customers may experience failed SSH connections when interacting with repositories via deploy keys. Our engineering team is actively investigating the root cause and working toward resolution.

investigating Some SSH connections using deploy keys a... Jul 21, 10:31 AM

We are investigating reports of impacted performance for some GitHub services.

resolved Disruption with GPT 5.3 Codex Jul 20, 6:37 PM

This incident has been resolved. Thank you for your patience and understanding as we addressed this issue. A detailed root cause analysis will be shared as soon as it is available.

investigating Disruption with GPT 5.3 Codex Jul 20, 6:25 PM

We are seeing signs of sustained recovery from the upstream provider for GPT 5.3 Codex requests. Requests are succeeding as expected. We are awaiting confirmation from the provider that the issue is fully mitigated before resolving this incident.

investigating Disruption with GPT 5.3 Codex Jul 20, 5:21 PM

The upstream provider continues to return intermittent errors for GPT 5.3 Codex requests. Some users may experience failed or interrupted responses when using this model. Traffic continues to be automatically rerouted to reduce impact, and we are actively working with the upstream provider on a resolution. In the meantime, selecting an alternative model will avoid disruption.

investigating Disruption with GPT 5.3 Codex Jul 20, 4:39 PM

We identified that an upstream provider is returning errors for GPT 5.3 Codex requests, causing some users to experience failed or interrupted responses. Traffic is being automatically rerouted to mitigate impact. We are working with the upstream provider to resolve the underlying issue. We recommend using a different model at this time while we resolve the problem.

investigating Disruption with GPT 5.3 Codex Jul 20, 4:04 PM

We are investigating GPT Codex 5.3 performance.

investigating Disruption with GPT 5.3 Codex Jul 20, 4:03 PM

We are investigating reports of degraded performance for Copilot AI Model Providers

📎 Sources

GitHub status ↗

Outage details are aggregated from official provider status pages. The Downtime reports them as a public service and is not affiliated with the providers named.