iis 7.5 - ASP.NET Web API returns 404 for PUT only on some servers -

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(cross post server fault. realised afterwards should have asked on stackoverflow first)

ok, have been racking brain , internet solution this. can't figure out.

i have written site uses asp.net mvc web api , working nicely until put on staging server. site works fine on local machine , dev web server. both dev , staging servers win server 2008 r2.

the problem this: site works, there api calls use http put method. these fail on staging returning 404, work fine elsewhere.

the first problem came across , fixed in request filtering. still getting 404.

i have turned on tracing in iis , following problem.

168. -module_set_response_error_status  modulename iis web core  notification 16  httpstatus 404  httpreason not found  httpsubstatus 0  errorcode 2147942402  configexceptioninfo   notification map_request_handler  errorcode system cannot find file specified. (0x80070002)

the configs same on dev , staging, matter of fact whole site direct copy.

why gets , posts work, not puts?

thanks

greg

those iis servers have web-dav module installed on them , bet not needed , installed because person installing ticked boxes.

just remove web-dav iis.

alternatively use web.config remove web dav module:

<system.webserver>     <modules>         <remove name="webdavmodule" />     </modules>     ...

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