HTTP digest authentication fail due to wrong nonce-count in iOS 10

Question

HTTP digest authentication no longer works in our app since iOS 10 due to wrong nonce-count in Authorization: Digest header generated by NSURLSession.

The same code

Answer 1

We have the same problem in our company as described here: Cordova app can't connect with Dynamics NAV Web-Service (ODATA) after update to iOS 10

We can reproduce the issue both in our App and the Safari Browser with iOS 10 devices. There does not seem to be a simple client side workaround. We opened a Bug Report with Apple.