The client and server cannot communicate, because they do not possess a common algorithm.

I am running a wcf app server with netTcpBinding in a service being called from inside of asp.net in iis 7.5 on windows 7. Both are on the same machine

When I try to debug I get

In the System Event Viewer

"An TLS 1.2 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The SSL connection request has failed."

In the App Svc log I get

SSPI "The client and server cannot communicate, because they do not possess a common algorithm."

My wcf service is set up like so:

          <security mode="Transport">             <transport clientCredentialType="Certificate" />           </security>

If the ciphers are set at the OS level and both the client and the server are on the same machine, how is it possible for this to occur?

I have messed around with the SCHANNEL reg key, GPEdit to change Cipher order, etc.

I have seen the client hello go out with lots of ciphers but the server responds with nothing and closes the connection

Anybody got any ideas?.