.Net 1.1 Web Service on 64-bit IIS 7.5: 'invalid Content-Type setting' error

Community update:



The problem seems to be related to IIS on W2K8 R2 server when the error response from the web service (that returned http code 500 by design) is overridden with the user friendly http page.

Several links that appeared to be most useful for me for this case:

http://forums.iis.net/t/1146653.aspx

http://mvolo.com/blogs/serverside/archive/2007/07/26/Troubleshoot-IIS7-errors-like-a-pro.aspx

http://learn.iis.net/page.aspx/267/how-to-use-http-detailed-errors-in-iis/

http://blogs.iis.net/ksingla/archive/2008/02/18/what-to-expect-from-iis7-custom-error-module.aspx

http://stackoverflow.com/questions/434272/iis7-overrides-customerrors-when-setting-response-statuscode