NextAuth JWT Refresh Token Not Updating — Backend Returns "Invalid Refresh Token"

[mitesh-avid-brio]

I’m using NextAuth.js with JWT sessions and refresh tokens. When the access token expires, the refresh logic calls my backend API to get new tokens. Although the backend returns a new access token and refresh token, my app continues sending the old refresh token in subsequent requests. This causes the backend to respond with a 401 “Invalid Refresh Token” error, and the token refresh fails repeatedly.

[ioanvranau]

The same happens to me. I am struggling for some days and no solution found. Seems like a race condition or something related with session update or so.

[mitesh-avid-brio]

@ioanvranau I tried Better-auth — it works fine, but I'm not able to use it with an external backend for refreshing the token, since it's handled internally by Better-auth.