"Could not create SSL/TLS secure channel" when adding service reference on WIndows 10

0
votes

I made application which use service at this address: https://webapp2.rzzo.rs/rzzo/RzzoService?wsdl ,before 3 years, and everything works fine. But now on windows 10 it doesn't work. And on earlier version on windows os it works. I try to make a new application from beginning, and when i try to add service reference in Visual Studio 2013 to service on above address, it says:

The request was aborted: Could not create SSL/TLS secure channel. Metadata contains a reference that cannot be resolved: 'https://webapp2.rzzo.rs/rzzo/RzzoService?wsdl'. Could not establish secure channel for SSL/TLS with authority 'webapp2.rzzo.rs'.

I try same procedure on another computer, but now with Windows 7, and there in no errors.

1
c#wcfssl

1 Answers

1
votes

You need to enable Diffie-Hellman Key Exchange Algorithm in order to make it work. Using Windows Registry Editor (regedit):

  1. Create new key Diffie-Hellman, at location:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\KeyExchangeAlgorithms

  1. Create new DWORD value named Enabled and set it to 1

Restart of machine is not necessary.

Regards, Dejan

RegEdit state after applied changes.