PUT and DELETE in RESTful WCF Service cause 401 Unauthorized error

Question

I have a RESTful web service in IIS 7.5 that is working just fine in our Development environment. Now we have deployed to a QA environment and we are getting 401 errors only on the PUT and DELETE verbs. I have read a lot about 405 errors, but not much about 401 errors. Here is the exact error message whenever I attempt a PUT or a DELETE.

The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was ''

Does anyone have any ideas?

Corey

Ahron

have you compared you app pool configuration and web.configs between the two environments? do they have any notable differences? – Corporative

Yes, the app pool configurations and the web.configs are exactly the same in both environments. (the only difference in web.configs is the connection string to the database) – Ahron

possibly a permission problem (goneale.com/2009/10/22/…). Are the folder permissions between dev and QA exaclty the same? – Corporative

That was it! You are a genius Zach Green! Thanks so much. It's funny, I looked at the link you sent and it looked familiar from when I configured the DEV environment. I did a bad job of configuration management since I forgot that I had made that same change in DEV. Thanks again. If you go ahead and answer the question then I can mark it as the correct answer and you can get credit. – Ahron

Execellent. Glad you got it fixed. – Corporative