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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(73.60000000000001, 81%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Some time ago, using the Azure Portal, we created Azure AD B2C tenants and got implicit grant flow working for the B2C_1 signin flow with MSAL Angular.
Today, using the Azure Portal, we created a new tenant with the same options as previously, but signin fails: The following request:
https://[REDACTED].b2clogin.com/[REDACTED].onmicrosoft.com/b2c_1_signin/oauth2/v2.0/authorize?response_type=token&scope=https%3A%2F%2F[REDACTED].onmicrosoft.com%2Fapi%2Fuser_impersonation%20openid%20profile&client_id=419bcab7-064e-4ec6-bafa-9090218c1bfa&redirect_uri=https%3A%2F%2F[REDACTED].westeurope.cloudapp.azure.com&state=[REDACTED]&nonce=b0554c3a-e20f-4fb1-9247-85c44277654d&client_info=1&x-client-SKU=MSAL.JS&x-client-Ver=1.3.4&client-request-id=2bdd6d9a-5e20-4276-8148-52e0acb7e0fa&prompt=none&response_mode=fragment
fails with a redirection to the default URL with
error=server_error&error_description=AADB2C%3a+An+exception+has+occurred.%0d%0aCorrelation+ID%3a+1edfd531-18b6-488f-ae42-122733fa480f%0d%0aTimestamp%3a+2021-10-01+12%3a52%3a48Z%0d%0a&state=[REDACTED]
What has changed?
How do we debug the problem?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(214.4, 81%, 30%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EMT%3C/text%3E%3C/svg%3E)
Could you please share the full correlation ID and any error you receive in your logs?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(249.60000000000002, 65%, 34%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EIH%3C/text%3E%3C/svg%3E)
Hi,
I'm getting the same error and this is only happening when the Single sign on is enabled on the User flow. In my scenario, i have 1 app registration and two web portals using the same user flow and client ID. B2C authentication works fine on the first portal. However, when i click sign in on the second portal (after signing to Azure B2C) it fails with this error when its trying to automatically login in. Once i refresh again, it redirects me to Azure B2C sign in page again and everything is working fine.
But this is not the expected behavior as i want the single sign on to work. My correlation ID is ID: 5f5c5329-a560-4f7c-8e79-d73f86939f08 Timestamp: 2021-10-08 04:27:57Z ' (See screenshot below)
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(60.8, 44%, 15%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYZ%3C/text%3E%3C/svg%3E)
Hi Marilee,
Is there any update on this?
We encountered a similar error to Izzy Hewage, some accounts experienced the AADB2C error when the first login, and it works if they retry the login.
Here are the error details, can you help with this? Thanks.
Correlation ID: 5a345f67-1088-4cec-af08-949eac22341e
Timestamp: 2024-02-20 06:38:01Z