问题
For the first time I have stumbled upon a problem where the solution has not already been provided (completely) on SO, but I hope someone out there can help.
My problem is similar to PUT and DELETE in RESTful WCF Service cause 401 Unauthorized error .
That is, I have a WCF Data Service where I get a 401 whenever I try to do updates or deletes (read and post works without any problems). The difference to the abovementioned post is that I am not hosting my service in IIS but on Windows Azure, so I am not able to apply that solution.
I have the same problem (401: invalid credentials when attempting updates or deletes) on both a .NET client and a restlet client using the OData extension. However, on the .NET client I am able to resolve the issue by setting UsePostTunneling = true.
In my service I have set config.SetEntitySetAccessRule("*", EntitySetRights.All).
Does anyone know how I can resolve the issue for my restlet client?
回答1:
First thing I would check is to see if you have PUT and DELETE verbs enabled in your handlers. Are you running this from a web role in full IIS or are you using Hosted Web Core (HWC), or something else? Usually, more than a 401, I see a 405 error because WebDAV is on the machine and PUT and DELETE verbs conflict there. You end up having to disable WebDAV for the app.
I would also check your authentication method in your web.config. I have seen the 'none' type cause issues, so change that to Forms.
来源：https://stackoverflow.com/questions/6705514/401-unauthorized-with-odata-update-and-delete