Error map
AADSTS50020 AADSTS50020: User account from identity provider does not exist in tenant and cannot access the application
Azure · layer 6, Platform & cloud
Centre: this error. First ring: errors it is linked with (12). Outer ring: what those are linked with. Colours show the layer of a request each error belongs to. Click any dot to re-centre the map on it; hover to follow its connections. The centre dot opens the error page.
Directly related (12)
AADSTS50173: The provided grant has expired due to it being revoked, a fresh auth token is needed
The refresh token was revoked — usually because the user changed or reset their password, or an admin revoked sessions.
AADSTS50053: Your account is locked (Smart Lockout) / sign-in blocked due to suspicious activity
Too many failed sign-ins (or sign-ins from a malicious IP) triggered Entra Smart Lockout.
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 ti…
InvalidAuthenticationTokenTenant: The access token is from the wrong issuer
The token was issued by a different tenant than the one that owns the subscription/resource.
AADSTS53003: Access has been blocked by Conditional Access policies
Sign-in succeeded, but a Conditional Access policy blocked access — device, location, app or risk conditions weren’t met.
AADSTS50057: The user account is disabled
The account exists but is blocked from signing in.
AADSTS50055: The password is expired
The user’s password expired under the tenant/on-prem password policy and must be changed before signing in.
AADSTS700082: The refresh token has expired due to inactivity
A cached refresh token wasn’t used for 90 days (the inactivity limit) and is no longer valid.
Azure AD (Entra ID): AADSTS700016 Application not found in the directory
The client ID in your sign-in request doesn’t exist in the tenant you’re authenticating against.
AADSTS50126: Error validating credentials due to invalid username or password
Microsoft Entra ID (Azure AD) rejected the sign-in because the username or password is wrong — or the flow can’t use passwords fo…
AADSTS65001: The user or administrator has not consented to use the application
The app needs permissions that haven’t been granted for this user or tenant.
AADSTS7000222: The provided client secret keys for app are expired
The app registration’s client secret has expired, so service-to-service authentication fails.
Two steps away (34)
HTTP 401 Unauthorized
The request has no valid authentication credentials — you need to log in or send a valid token.
JWT Expired / Invalid Token
The JSON Web Token sent with the request is expired, malformed or signed with a different key, so the API rejects it (usually wit…
{"message":"Missing Authentication Token"} / No authorization token was found
The request reached a protected endpoint without credentials — or, on AWS API Gateway, it hit a path/method that doesn’t exist.
Webhook signature verification failed (Stripe, Razorpay, GitHub…)
Your endpoint computed a different HMAC signature than the one the provider sent, so the webhook is rejected.
Error creating: pods is forbidden: violates PodSecurity "restricted:latest": allowPrivilegeEscalation != false ...
The namespace enforces a Pod Security Standard (baseline/restricted) and the pod spec breaks one of its rules.
WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! (ssh host key changed)
The server’s SSH host key differs from the one saved in ~/.ssh/known_hosts — usually because the server was rebuilt or the IP was…
HTTP 502 Bad Gateway
A proxy or gateway (Nginx, load balancer, CDN) got an invalid response — or no response — from the upstream server behind it.
HTTP 503 Service Unavailable
The server is temporarily unable to handle the request — overloaded, in maintenance, or has no healthy backends.
Cloudflare Error 520: Web Server Returned an Unknown Error
Cloudflare connected to your origin, but the origin returned an empty, unknown or invalid response.
AADSTS50034: The user account does not exist in the directory
There’s no user with that sign-in name in the tenant.
AADSTS500113: No reply address is registered for the application
The app registration has no redirect URI for the platform being used, so Entra ID has nowhere to send the response.
SubscriptionNotFound: The subscription 'x' could not be found
The subscription ID doesn’t exist in the current tenant or the identity has no access to it.
Azure AD (Entra ID): AADSTS50076 / AADSTS50079 — multi-factor authentication required
A Conditional Access policy requires MFA, but the sign-in flow (often a script, legacy client or ROPC password grant) can’t compl…
AADSTS50105: Your administrator has configured the application to block users unless they are specifically granted access
The enterprise app requires assignment (“Assignment required? Yes”) and the user isn’t assigned to it, directly or via a group.
passwd: Authentication token manipulation error
passwd couldn’t update the password — the root filesystem is read-only, /etc/shadow has wrong permissions/attributes, or a PAM ru…
Failed to connect to bus: No such file or directory (systemctl --user / timedatectl)
The command needs the D-Bus/systemd bus, which isn’t available in this session — common over su, sudo -u, cron, containers or WSL.
AADSTS90002: Tenant 'x' not found
The tenant ID or domain in the authority URL doesn’t exist — or isn’t in the cloud you’re calling (public vs government/China).
AADSTS70021: No matching federated identity record found for presented assertion (GitHub Actions / workload identity)
The OIDC token from GitHub Actions/Kubernetes/another IdP doesn’t match any federated credential on the app — issuer, subject or…
Azure SQL: Login failed for user '<token-identified principal>' (Microsoft Entra / managed identity)
Entra ID authentication succeeded, but there’s no database user for that identity (or it lacks permission to the database).
bcrypt error: Illegal arguments: undefined, string / data and salt arguments required / data and hash arguments required
bcrypt.compare/hash received undefined — the password field or stored hash wasn’t passed.
invalid_token: The access token is invalid (JsonWebTokenError: invalid signature / jwt malformed)
A token was sent but the server couldn’t verify it — bad signature, malformed, revoked, or issued for another audience or environ…
Azure CLI: Please run 'az login' to setup account / No subscription found
The Azure CLI has no signed-in account (or its token expired), or the account has no subscriptions.
OAuth 2.0 Error: invalid_client
The OAuth server couldn’t authenticate your application — wrong client ID/secret, wrong auth method, or the client doesn’t exist…
fatal: Authentication failed for 'https://github.com/x/y.git/'
HTTPS authentication to the Git host failed — wrong or expired credentials, or a password used where a token is required.
Host key verification failed. fatal: Could not read from remote repository.
SSH doesn’t trust the server’s host key — first connection in a non-interactive environment, or the key changed.
Git: Permission denied (publickey). fatal: Could not read from remote repository.
SSH authentication to GitHub/GitLab/Bitbucket failed — no key, wrong key, or the key isn’t added to your account.
OAuth 2.0 Error: invalid_grant
The authorization code, refresh token or credentials sent to the token endpoint are invalid, expired, already used or were issued…
API Error: Invalid API Key / Incorrect API key provided
The API didn’t recognise the key sent with the request — it’s wrong, revoked, from another environment, or sent in the wrong plac…
npm ERR! code EACCES — permission denied
npm can’t write to a directory — usually global installs into a root-owned folder.
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
The docker CLI can’t talk to the Docker engine — it isn’t running, or your user can’t access the socket.
HTTP 403 Forbidden
The server understood the request but refuses to authorize it — you (or the server process) are not allowed to access this resour…
Kubernetes: CreateContainerConfigError — secret / configmap not found
Kubernetes can’t build the container’s configuration — usually a referenced Secret, ConfigMap or key doesn’t exist in that namesp…
ECS: ResourceInitializationError: unable to pull secrets or registry auth
Fargate couldn’t fetch the task’s secrets (Secrets Manager/SSM) or registry credentials before starting containers.
Key Vault: (SecretNotFound) A secret with (name/id) x was not found in this key vault
The secret name (or version) doesn’t exist in that vault — typo, wrong vault, or the secret is deleted (soft-deleted).
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