IIS 7.5, Web Service and HTTP 405 error

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After hours of struggling, this is final solution that helped me (tested from fiddler):

  1. On IIS 7.5 -> YourWebsite -> Handler Mappings
  2. Choose “Add module mapping” option on the right side of the panel
  3. In “Request path” field enter *.wsdl
  4. In “Module” field enter “ProtocolSupportModule”
  5. Click on “Request restrictions” and go to Verbs tab
  6. Enter POST verb
  7. Save changes

End voila, fiddler no longer answers with 405 but with happy 200.

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