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Firebase: Firebase Hosting custom domains API returning 501 errors

MinorStatus: resolvedStarted Resolved (13 h)3 updatesstatus.firebase.google.com (opens in new tab)

Affected components: Hosting

Timeline of updates

  1. service disruption

    The engineering team is investigating elevated 501 "unimplemented" errors seen in Hosting's API when managing custom domains. It does not appear at this time that the data plane is effected.

  2. service disruption

    We believe to have found the root cause and are working to restore this portion of our API. We are more confident now that the data plane is unaffected and that this was limited in scope to the management of Hosting custom domains.

  3. resolved

    The fix is being rolled out. The ETA for complete resolution is July 31 at ~11:00 UTC, though some users may have restored functionality before then.

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Impact, status and times are the vendor’s own, as last archived. View on status.firebase.google.com (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by Firebase, started 2026-07-30 21:00 UTC, resolved after 13 h, 3 update(s).

Title
Firebase Hosting custom domains API returning 501 errors
Vendor
Firebase
Date
URL
https://rewindex.com/company/firebase/incidents/e1vzivqdlmv9kfgeejjr

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