Stuck in Azure Login Loop

Question

I am trying to login to the Azure Portal. My Azure AD account is associated with 2 tenants - my regular 0365 tenant and I also have an Azure AD B2C tenant as well. When I access the Azure Portal in Edge, I get shown the following screen:

If I click on Next, I get taken back to the same screen as above. If I click on Skip for now, I get the following error screen:

Any ideas?

Answer 1

• If it is SAML Request ,the query string size must have exceeded ,which should not increase over the limit of 4096 bytes.
• Try using fiddler trace to check saml query string size and for it to be not included ,please make sure that the SAML Request is not signed.The signature element is optional in the request and Azure AD does not support /validate signed authentication requests according to Signature - | Microsoft Docs
• In Azure AD B2C , to disable the SAML request signature, set the WantsSignedRequests to false so that the Signature parameters (query string or post parameter) are omitted from the request.

To remove signature from SAML request in aadb2c

<Metadata>
  ...
  <Item Key="WantsSignedRequests">false</Item>
  ...
</Metadata>

• In other cases such as oauth2 check the query parameter like state parameter and get it addressed with the particular application vendor or support team.

• Also check AADSTS90015 while doing ADFS - Stack Overflow