Error map
access_denied OAuth 2.0 Error: access_denied (The user or authorization server denied the request)
Authentication · layer 4, Application & API
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)
Firebase Auth: auth/popup-closed-by-user / auth/popup-blocked / auth/cancelled-popup-request
The OAuth popup for Google/GitHub sign-in was closed, blocked by the browser, or replaced by another popup request.
OAuth 2.0 Error: invalid_scope / insufficient_scope
The requested scope is unknown or not allowed for this client — or the token lacks the scope the API endpoint requires.
PERMISSION_DENIED: The caller does not have permission (insufficient permissions)
You are authenticated, but your identity isn’t allowed to perform this action on this resource.
OIDC Error: login_required / interaction_required / consent_required (silent authentication failed)
A silent sign-in (prompt=none, iframe or refresh) couldn’t complete because the user must interact — no session, consent needed,…
Google OAuth: Error 403: access_denied — The developer hasn't given you access to this app / has not completed the Google verification process
The Google OAuth app is in “Testing” publishing status and the signing-in account isn’t listed as a test user.
GitHub OAuth: {"error":"bad_verification_code","error_description":"The code passed is incorrect or expired."}
The authorization code sent to GitHub’s token endpoint was already used, expired (10 minutes), or belongs to another OAuth app.
WebAuthn / Passkeys: NotAllowedError: The operation either timed out or was not allowed
The browser refused the passkey/WebAuthn ceremony — the user cancelled, it timed out, no matching credential, or the call wasn’t…
Google OAuth: Error 403: disallowed_useragent (sign-in from an embedded WebView)
Google blocks OAuth sign-in inside embedded WebViews (in-app browsers, Electron BrowserWindow, React Native WebView).
NextAuth / Auth.js: OAuthAccountNotLinked — To confirm your identity, sign in with the same account you used originally
A user tried to sign in with a new OAuth provider using an email that already belongs to an account created with a different prov…
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.
Google OAuth: Error 401: deleted_client — The OAuth client was deleted
The OAuth client ID used in the request has been deleted from the Google Cloud project.
Firebase Auth: auth/unauthorized-domain — This domain is not authorized for OAuth operations for your Firebase project
The site’s domain isn’t listed in Firebase Authentication → Settings → Authorized domains.
Two steps away (31)
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.
TypeError: Failed to fetch / NetworkError when attempting to fetch resource
The browser couldn’t complete the request at the network level — CORS, DNS, offline, blocked mixed content, or the server refused…
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…
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…
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…
java.nio.file.AccessDeniedException: /path
The OS denied a file operation to the Java process.
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.
AWS S3: AccessDenied (403) when calling GetObject / PutObject
An IAM policy, bucket policy, ACL/ownership setting, Block Public Access or KMS key policy denied the S3 request.
AWS: ExpiredToken — The security token included in the request is expired
Temporary AWS credentials (STS/SSO/assumed role) have expired.
HTTP 431 Request Header Fields Too Large
The request headers — almost always cookies — exceed the server’s size limit.
Warning: session_start(): Session cannot be started after headers have already been sent
session_start() ran after output was sent, so PHP can’t set the session cookie.
Google OAuth: Google hasn't verified this app / This app isn't verified
The OAuth app requests sensitive or restricted scopes and hasn’t passed Google’s verification, so users see a warning screen.
OAuth Error: redirect_uri_mismatch
The redirect URI in your OAuth request doesn’t exactly match one registered for the client in the provider’s console.
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.
OAuth 2.0 Error: unsupported_grant_type
The token endpoint didn’t recognise grant_type — usually because the body wasn’t sent as application/x-www-form-urlencoded, or th…
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.
WebAuthn: SecurityError: The relying party ID is not a registrable domain suffix of, nor equal to the current domain
The rp.id in the WebAuthn options doesn’t match the page’s domain (or a parent domain), so the browser rejects it.
Firebase Auth: auth/invalid-credential (auth/wrong-password, auth/user-not-found, auth/invalid-login-credentials)
Firebase rejected the email/password sign-in — wrong password, no such user, or a provider credential that’s malformed/expired.
OAuth 2.0 Error: invalid_request (missing or invalid parameter)
The authorization or token request is malformed — a required parameter is missing, duplicated, or has an invalid value.
Keycloak: We are sorry... Invalid parameter: redirect_uri
The redirect_uri in the login request isn’t in the Keycloak client’s Valid Redirect URIs.
NextAuth / Auth.js: [next-auth][error][NO_SECRET] Please define a `secret` in production / MissingSecret
Auth.js needs a secret (NEXTAUTH_SECRET / AUTH_SECRET) in production to sign and encrypt tokens/cookies.
user is not in the sudoers file. This incident will be reported.
Your account isn’t allowed to use sudo.
WordPress: Sorry, you are not allowed to access this page.
Your user role lacks the capability for that admin screen — or the database table prefix / user capabilities are out of sync afte…
NotAllowedError: Failed to execute 'writeText' on 'Clipboard': Document is not focused.
The Clipboard API refused to write — the page isn’t focused, there was no user gesture, or the context isn’t secure.
OAuth 2.0 Error: unauthorized_client (client not allowed to use this grant type)
The client exists, but isn’t allowed to use the requested flow (grant type or response type).
OAuth 2.0 Error: unsupported_response_type
The authorize request asked for a response_type the client or server doesn’t allow — e.g. token (implicit) when only code is enab…
OAuth PKCE error: invalid_grant — PKCE verification failed / code_verifier does not match code_challenge / code_challenge required
The code_verifier sent to the token endpoint doesn’t match the code_challenge from the authorize request, or PKCE is required but…
OAuth callback error: state mismatch / Unable to verify authorization request state / State cookie was missing
The state value returned to the callback doesn’t match what the app stored before redirecting — the CSRF protection for OAuth fai…
Firebase Auth: auth/too-many-requests — Access to this account has been temporarily disabled due to many failed login attempts
Firebase throttled sign-in or SMS verification because of too many attempts from the device/IP or for the account.
Firebase Auth: auth/network-request-failed — A network AuthError (such as timeout, interrupted connection or unreachable host) has occurred
The Firebase Auth SDK couldn’t reach Google’s servers — offline, blocked by an extension/firewall, or (on Android emulators) miss…
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