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Editorial Team
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Asked: 2026-06-06T16:43:40+00:00

I am using IIS 6 on 2003. I have created a HTTP handler dll

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I am using IIS 6 on 2003. I have created a HTTP handler dll that inherits from IHttpAsyncHandler. The dll builds into the inetpub\www8080root\common\bin directory. It is meant to intercept all requests.

The web site is set to monitor port 8080. I have created a common folder in the www8080root directory and have created a virtual directory in II6 to point to it. I created a web.config file in the common directory

When I access http://localhost:8080/common/index.html all I get is

Service Unavailable

I am not sure where this message is coming from.
w3wp.exe does not start and there is nothing in the error log to indicate a problem.

I have run aspnet_regiis -r

I don’t think it is occurring within the handler itself and without w3wp.exe I am unable to attach to the process. I have added Debugger.Break() but nothing happens.

I don’t want to load IIS 7 as it conflicts with a legacy application.

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1 Answer

  1. Editorial Team

    The problem for me was that the identity that the worker process was impersonating was not a member of IIS_WPG. A little more detail in the message would have been nice.

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