App registrations (legacy) no longer available after March 1, 2020

Merovingian 1 Reputation point

Hi there!

I've noticed that Azure AD App Registrations Legacy will be EOL after March 1, 2020.
I have also noticed that in the current version URLs including a # symbol are no longer allowed.

We are using App Registrations created with the legacy version in production for some of our customers, will they still work after March 1, 2020? Furthermore I would like to know why URLs using a # symbol are no longer supported.

Thank you!



Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
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  1. soumi-MSFT 11,756 Reputation points Microsoft Employee

    @Merovingian ,

    The fragment "#" is kind of a reserved character and that got restricted from being used in the "Reply URLs".

    Mostly after March 1, 2020, the use of reply urls with fragment wont work. But I am not sure and hence I in discussion with the backend team. Also, working on the part to understand the reason of blocking the '#' character. I would keep you posted on this thread.