Cross-topic view10 problems

Authentication & Session Problems

Sessions that vanish, tokens that fail, and login loops across the stack.

Cross-topic section

This view references problems owned by primary sections — no duplicate records. Owned by: Next.js, Django / Flask / FastAPI, Supabase / Firebase, API & Authentication.

Next.jsintermediate

Next.js authentication session disappears after refresh

Next.jsReact
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Python Webintermediate

Django admin login keeps redirecting back to login

DjangoFlaskFastAPI
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Backend-as-a-Serviceintermediate

Supabase session disappears after page refresh

SupabaseFirebase
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Backend-as-a-Serviceintermediate

Firebase authentication user exists but session is missing

SupabaseFirebase
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APIsintermediate

API returns 401 even though JWT token is present

RESTJWT
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APIsintermediate

Refresh token works once and then becomes invalid

RESTJWT
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APIsintermediate

OAuth redirect enters an infinite login loop

RESTJWTOAuth
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APIsintermediate

JWT appears valid but backend rejects signature

RESTJWT
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APIsintermediate

User stays logged in after access should have expired

RESTJWT
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APIsintermediate

Login works but authenticated API calls still fail

RESTJWT
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