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Editorial Team
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Asked: 2026-05-13T20:05:09+00:00

A customer using a ASP.NET program I have just sent them is experiencing the

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A customer using a ASP.NET program I have just sent them is experiencing the error below, I had personally tested the program on 4 web server IIS6, 7, and 7.5, on 4 different networks and I never got this, the customer is using IIS6 with .Net 2.0 (as required). The program uses Windows authentication which may or may not be part of the problem. I’m stuck I don’t know where to start with this. Any help is very much appreciated.

Sys.WebForms.PageRequestManagerServerErrorException:
An unknown error occurred while
processing the request on the server.
The status code returned from the
server was: 500

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1 Answer

  1. Editorial Team

    HTTP error code 500 simply means “something bad happened on the server, but we’re not going to tell you what that was”.

    You have to “ask” the server machine what went wrong. Look into the Windows event logs, the IIS logs, or your application’s own logs to find out what the “something” is.

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