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Veeam Backup Enterprise Manager and indicates that IIS is not correctly handling the /oauth/authorize request.

  • June 10, 2026
  • 1 comment
  • 11 views

sumit.saini
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Dear All, Greeting!!!, I hope every thing is fine.

 

I am facing this issue while i am open Veeam Backup Enterprise Manager

 

HTTP Error 404.4 - Not Found ‘The resource you are looking for does not have a handler associated with it. Most likely causes: + The file extension for the requested URL does not have a handler configured to process the request on the Web server: ‘Things you can try: + Ifthe fle extension does not have a handler associated witht, add a handier mapping for the extension. 2 Verify that the handle associated with the Fle extension is propery nctaed and conigured. © Create a tracing rue to track failed requests for this HTTP status cods. For mare information about creating a racing ule fo failed requests, cick here. Detailed Error Information: Module 11S Web Core Requested URL hitps:/localhost:3443/oauth/authorze?chient_id=veeam-ebapp-publicclientaresponse type=codearedirect_uri="%2FAuthorize. Notification HapRequestHandier Physical Path F:\Veeam\Backup and Replicaton\Enterprise Manager\WebApp\oauth\authorize Handler ssphetCore Logon Method Anonymous Error Code 0x80070075 Logon User Anonymous More Information: This error means that the Web server does not recognize th fil extension of the requested resource. A module handler i not configured on the Web server for this extension. If the file extension being denied is required by the Web server, 3d the appropriate handle fo the fie extension.

1 comment

Mohamed Ali
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  • VUG Leader
  • June 10, 2026

@sumit.saini  Was this working previously and recently stopped, or has it never worked since the initial setup?

Also, Check if there have been any recent .NET Framework or Windows updates installed around the time the issue started? Also verify is the URL Redirection has been enabled in IIS.