Azure App Service
Azure App Service is a service used to create and deploy scalable, mission-critical web apps.
8,931 questions
Azure web app: Http Error 500 - can't currently handle this request.
![](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(169.60000000000002, 55.00000000000001%, 26%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EOD%3C/text%3E%3C/svg%3E)
Onyango, David
31
Reputation points
I have a dot net core application which I had deployed a number of instances and recently I tried to deploy it and unfortunately it fails to launch with error, "Http Error 500 - can't currently handle this request.". I have attempted different options including configuring Authentication under Settings. In previous deployments, I have only had to configure Environment variables to reflect applicaiton clientid, secret among other basic settings.
Below is a snippet from the log stream which seems to indicate a permission problem. Even though I am using an owner account for both deployment and launching the application.
The authenticated user does not have permission to use this DLL. <li>The request is mapped to a managed handler but the .NET Extensibility Feature is not installed.</li> <div><fieldset><h4>Things you can try:</h4><ul> <li>Ensure that the NTFS permissions for the web.config file are correct and allow access to the Web server's machine account.</li> <li>Check the event logs to see if any additional information was logged.</li> <li>Verify the permissions for the DLL.</li> <li>Install the .NET Extensibility feature if the request is mapped to a managed handler.</li> <li>Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click <a href="http://go.microsoft.com/fwlink/?LinkID=66439">here</a>. </li> </ul></fieldset></div><div><fieldset><h4>Detailed Error Information:</h4><div><table border="0" cellpadding="0" cellspacing="0"><tbody><tr><th>Module</th><td> EasyAuthModule_32bit</td></tr><tr><th>Notification</th><td> BeginRequest</td></tr><tr><th>Handler</th><td> aspNetCore</td></tr><tr><th>Error Code</th><td> 0x80004005</td></tr></tbody></table></div><div><table border="0" cellpadding="0" cellspacing="0"><tbody><tr><th>Requested URL</th><td> https://axleerpgateway:80/</td></tr><tr><th>Physical Path</th><td> C:\home\site\wwwroot</td></tr><tr><th>Logon Method</th>
</tr></tbody></table></div></fieldset></div>
Azure App Service
{count} votes
-
Silvio Lorenzo Torre 155 Reputation points2025-04-13T11:36:37.0066667+00:00 Hi David, if in your **
web.config**file you seeaspNetCoreModuleV2(and notaspNetCoreModule) and it actually points to the correct DLL (your entry point) and you are using ZIP deploy make sure none of the deployed DLLs are blocked (check file properties → Unblock) or marked as read-only (can cause loading errors)Regards,
-
Onyango, David 31 Reputation points
2025-04-13T21:42:08.2+00:00 on further investigation, it appears that the OpenID Connect metadata document link specified in the end points is unreachable - https://XXXXXX.ciamlogin.com/common/v2.0/.well-known/openid-configuration.
I opted to use the Microsoft Entra ID OpenID Connect metadata document that is listed in the endpoints for my previous directories https://login.microsoftonline.com/common/v2.0/.well-known/openid-configuration. This appears useful but gets stuck with the error, invalid_request: The provided value for the input parameter 'redirect_uri' is not valid. The expected value is a URI which matches a redirect URI registered for this client application. I have attempted different URLs unsuccessfully.
When I examine the URL generated by the system before it generates above error includes the following "%2f.auth%2flogin" at end of my web app URL as the redirect_uri. I have attempted to append /.auth/login in my redirect definition unsuccessfully.
It appears there is a different approach to configuration introduced or a bug as I have never experienced this before.
Another interesting observation is that when I attempt to launch the same link on Google chrome browser, I get the error message, "You can't sign in here with a personal account. Use your work or school account instead". This error doesn't appear in Microsoft Edge browser. I have also verified in the app registration manifest that sign in audience parameter is correct to support personal accounts as well.
"signInAudience": "AzureADandPersonalMicrosoftAccount"@Silvio Lorenzo Torre , I have seen you answer but perhaps you can re-examine the latest observations above
-
![](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(304, 61%, 39%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELR%3C/text%3E%3C/svg%3E)
Laxman Reddy Revuri 5,395 Reputation points Microsoft External Staff Moderator2025-04-23T22:03:44.0033333+00:00 Hi @Onyango, David ,
We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution, please do share that same with the community as it can be helpful to others. Otherwise, will respond with more details and we will try to help.
Sign in to comment
Sign in to answer