Hi Guys, We are having an issue with using FTP after applying the above patch. In the logs I see the error "411 Login_failure, Use rname: , Reason: Key exchange failed" and "Key exchange failed., Remote Disconnect". Both errors started right after the patch was applied. Is anyone familiar with this error? Thanks, Ron

I'd ask in the IIS forums, http://forums.iis.net/ -- Mike Burr

Hi Ron, Can you isolate the issue to ms10-046? Will the issue disappear if you temporarily uninstall the security update?

Because of the nature of the patch uninstalling the patch is not an option for us... mandated.... so, what I can tell you is that in the Pre-prod env which has not had the patch installed we are still functional... and also the logging shows that the issue started right after the patch was installed.

Seems we have a solution. When we changed from Password Authentication to Keybase Authentication the issue went away. Thanks for all the help guys!