Documentation sites with a custom domain returned a 404 error

Summary

Documentation sites with a custom domain returned a 404 error

Between 14:36 and 14:43 UTC, all GitBook documentation sites using a custom domain were returning a 404 "Not Found" error, making documentation unavailable to users. The issue was caused by a problem introduced by an upstream provider that affected our deployment. The incident was resolved by rolling back the deployment, after which all sites were confirmed to be fully operational.

• Started

  Mar 6, 2026 · 4:56 PM

• Resolved

  Mar 6, 2026 · 2:36 PM

• Duration

  2h 20m

• Severity

  Major

• ✓

  Resolved

  Mar 6 · 4:56 PM Gitbook

  Between 14:36 and 14:43 UTC, all GitBook documentation sites using a custom domain were returning a 404 "Not Found" error, making documentation unavailable to users. The issue was caused by a problem introduced by an upstream provider that affected our deployment. The incident was resolved by rolling back the deployment, after which all sites were confirmed to be fully operational.