Using Sharepoint Web Services with ADFS Claims Authentication

Question

We recently switched one of Sharepoint instances to use ADFS claims authentication instead of Windows authentication. And now I can not get the copy service to work correctly with the server.

I tried many methods, but no one worked. Including found here , suggested by another answer here on SO. In this case, I get 400 failed requests when I call the login method.

I don't have to impersonate the user, but that would be great. Any idea how I should do this?

Things I have on the server to help authenticate:

• IClaimsIdentity containing all claims issued by ADFS
• Bootstrap download point (I tried to authenticate it, but so far no luck)
• System account credentials (which I used when trying to authenticate with SharePoint authentication service)