Our services aren't available right now Azure Origin: Platform & cloud Last updated 13 Oct 2026

Azure Front Door: Our services aren't available right now (503/502 from Front Door)

Front Door couldn’t get a valid response from your origin — origin down, health probes failing, TLS/host header mismatch, or a timeout.

Exact message you may see Our services aren't available right nowWe're working to restore all services as soon as possibleFront Door 503
Explore the map of this error Full error map →
Seen on: Azure

Meaning

The page shows an x-azure-ref you can look up. Common: origin certificate name doesn’t match the origin host header, private link/origin firewall blocking Front Door, or responses exceeding the timeout.

Common causes

  • Origin unhealthy or probe path failing
  • Origin host header/certificate mismatch
  • Origin firewall not allowing AzureFrontDoor.Backend service tag
  • Response slower than origin timeout

⚡ Quick fix

  1. Check origin health and probe settings
  2. Set origin host header to a name the origin’s certificate covers
  3. Allow the AzureFrontDoor.Backend service tag / X-Azure-FDID check

Detailed fix by platform

Azure CLI

  1. az afd origin show -g rg --profile-name fd --origin-group-name og --origin-name app --query "{host:hostName,hostHeader:originHostHeader,enabled:enabledState}"

How to diagnose

  1. Reference — x-azure-ref in diagnostics logs
  2. Health — Origin health %
  3. TLS — Certificate CN/SAN vs host header

🔧 Still not fixed?

Many errors look alike. If the steps above didn’t solve it, one of these is probably what you’re facing:

Where this error sits

Origin: Platform & cloud. Errors that are often confused with or caused by this one (click to open):

502 — HTTP 502 Bad Gateway (HTTP)502503 — HTTP 503 Service Unavailable (HTTP)503520 — Cloudflare Error 520: Web Server Returned an Unknown Error (Cloudflare)520522 — Cloudflare Error 522: Connection Timed Out (Cloudflare)522AADSTS500113 — AADSTS500113: No reply address is registered for the application (Azure)AADSTS500113AADSTS50020 — AADSTS50020: User account from identity provider does not exist in tenant and cannot access the application (Azure)AADSTS50020The request could not be satisfied — CloudFront: 403 ERROR — The request could not be satisfied (AWS)The request could not…Our servi…

Explore the map of this error Full error map →

🧠 Still stuck? Analyze your error

Paste the full message, response headers or stack trace — we'll detect the platform and point to the most likely cause.

💬 What worked for others

No tips yet — did something else fix this for you?

Share what worked for you

Tips are checked by an editor before they appear. Links are removed.