Error map
disallowed_useragent Google OAuth: Error 403: disallowed_useragent (sign-in from an embedded WebView)
Authentication · layer 4, Application & API
Centre: this error. First ring: errors it is linked with (9). 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 (9)
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 2.0 Error: access_denied (The user or authorization server denied the request)
The authorization request was refused — the user clicked Cancel/Deny on the consent screen, or a policy denied access.
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…
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.
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.
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.
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.
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 (22)
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.
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.
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.
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.
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,…
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.
HTTP 400 Bad Request
The server could not understand the request because its syntax, headers or body are malformed or invalid.
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.
API Error: Missing required parameter (parameter_missing / "x" is required)
The API rejected the request because a field it requires — in the query string, path, headers or JSON body — wasn’t sent or was e…
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…
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…
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.
Keycloak: invalid_grant — Account is not fully set up
The user has pending required actions (verify email, update password, configure OTP), so non-interactive token requests (password…
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…
QuotaExceededError: Failed to execute 'setItem' on 'Storage': Setting the value exceeded the quota
localStorage/sessionStorage is full (about 5 MB per origin) or storage is disabled.
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_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…
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/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.
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