Exchange 2019 CU5 The website could not be found

Exchange ECP - The website was not found

After installing the CU5 for Exchange 2019, I was no longer able to log in to the ECP.

After a review it turned out that the authentication method for the ECP was changed.

With the Powershell I was able to fix that quickly

Set-EcpVirtualDirectory -Identity “SRVEX \ ecp (default web site)” -BasicAuthentication $ true -FormsAuthentication $ true

Then I was able to register again at the ECP.

https://mail.dwp.local/ecp/?ExchClientVer=15.1

Exchange 2019 ECP - The website was not found