invalid_grant: undefined - [undefined]: AADB2C90085: The service has encountered an internal error. Please reauthenticate and try again

Question

0

Getting invalid_grant: undefined - [undefined]: AADB2C90085: The service has encountered an internal error. Please reauthenticate and try again.

out of nowhere in DEV environment. It used to work fine but suddenly it started throwing this error. checked all the configurations and code. the same code works when PROD configurations are used but throws this error in token request endpoint with DEV configurations.

Compared the custom policies and policy keys.

How to troubleshoot further i dont understand...

This is generated token endpoint

https://<tenant>.b2clogin.com/<tenant>.onmicrosoft.com/b2c_1a_signup_signin/oauth2/v2.0/token
Payload
client_id: <clientid>
redirect_uri: https://www.test.site.se/
scope: https://tenant.onmicrosoft.com/<guid>/user_impersonation 
openid profile offline_access
code: 
code_verifier: 
grant_type: authorization_code
client_info: 1
client-request-id:

Api permission blade of front end app

log for this error from Audit logs

Please mention if anything else is needed to understand the question better

Answer 1

Hi @Paritosh Arya
Thank you for posting your query on Microsoft Q&A.

It seems you are encountering error AADB2C90085: "The service has encountered an internal error. Please reauthenticate and try again".

It works fine when you use PROD configurations but throws error in token request endpoint with DEV configurations.

Kindly follow the link to troubleshoot the error: https://learn.microsoft.com/en-us/answers/questions/1350703/invalid-grant-error-while-trying-to-request-a-toke

Hope this helps. Do let us know if you have any further queries.

If this answers your query, do click `Accept Answer` and `Yes`.