Error in login via Azure active directory Authentication on IIS server in Blazor Webassembly Application

Kuldeep Y 36

Hello
I am using Azure Active Directory authentication in my Blazor Webassembly application and it is working fine on my local machine but when I publish it on IIS server there is an issue

This image shows my local machine where I click on login button and got MS login popup window But On IIS Server I Got below : -

Any help would be awesome

Yurong Dai-MSFT 2,781 Reputation points Microsoft Vendor

2022-09-19T02:56:04.983+00:00

Hi @Kuldeep Y ,
Did you check the event viewer, is there any message? Did you grant IIS_IUSR permission to the certificate? This problem may be caused by the authentication of the application pool when reading the certificate. To fix this, open Certificate Manager, right click on Certificates, All Tasks, Private Key Manager and insert IIS group (IIS_IUSRS) for read/write permissions. For testing, try "Everyone".
Kuldeep Y 36 Reputation points

2022-09-20T13:51:09.343+00:00

Thanks for comment,
this is not working for me, I am still not getting MS authentication popup.
Kuldeep Y 36 Reputation points

2022-09-20T13:53:54.71+00:00

Thanks for comment,
this is not working for me, I am still not getting MS authentication popup and in event viewer there is no such error trace for why this is happening here , I mean there is not any clear cause for this
JasonPan - MSFT 4,201 Reputation points Microsoft Vendor

2022-09-21T07:06:54.79+00:00

Hi @Kuldeep Y

I have try to test in my side and it works well. I know you can work well when debugging in Visual Studio, and I believe have set the redirect url in App Registration with http(s)://localhost:7050/authentication/login-callback. So please check the redirect url, I need to make sure you have also added http://localhost:89/authentication/login-callback in it.

I also need the login url like below, you can copy and paste for us, please hide the sensitive information.

And I can't reproduce the issue, it seems when the error occurs, it has some error in your popup window, right? If you have, please share with me.

Thanks for your patience.

Best Regards
Jason