GET request to IIS returns Microsoft-HttpApi/2.0 -


i've got 6 identical machines running iis , apache. today 1 of them decided stop serving requests. can access of webapps when try localhost/resource when try url/resource 404. did request against machine isn't working , back:

  • server: microsoft-httpapi/2.0
  • connection: close

compared working server:

  • server: microsoft-iis/8.5
  • x-powered-by: asp.net
  • content-type: text/html

tried searching problem came nothing, got idea's?

windows has http service manages calls iis , other http enabled services on windows machine. either need configure handle calls, or, in case of wamp or similar non-iis-web-server-on-windows scenarios may need turn off.

when see "microsoft-httpapi/2.0" returning error, such 400 "bad url" or "bad header", etc. problem because the http.sys service intercepting http request , terminating because not meet minimum validation rules configured.

this configuration found in registry @ hkey_local_machine\system\currentcontrolset\services\http\parameters. in case, choking because had restful call had 400 character segment in url 160 characters more default value of 260,

  1. added registry parameter urlsegmentmaxlength dword value of 512,
  2. stopped service using net stop http
  3. started service using net start http

i've run these issues before , easy troubleshoot there little on web addresses it.

try these links


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