You may see this error when using encryption with xfServerPlus and an xfNetLink .NET client. The exception error is RemoteCertificateNameMismatch, but it is not logged in the Windows event log.

The problem occurs when the common name (commonName) in the pem file does not match the host name passed by the xfNetLink .NET connect() method (or defined in the app config file [if you\'re using the connect() method that does not pass the host name], or set with XFNLNET_CLASS_HOST). Note that if you do not pass the host name or define it in an app config file or with XFNLNET_CLASS_HOST, "localhost" is used.

The match can be exact or use wildcards. For example, if the xfServerPlus host name is myserver.mydomain.loc, it would match a certificate with a commonName of "myserver.mydomain.loc" or "*.mydomain.loc". Using a wildcard enables you to create a certificate that can be used by multiple servers on the same domain. You can specify alternate names in the perm file if you like and match one of those. However you cannot, for example, use the machine\'s name for one value and its IP address for the other.

To correct the problem, remake your pem file and specify the host name of the xfServerPlus machine for the commonName value. (This is specified in the configuration file or when prompted.) See Requesting and creating certificates in the Synergy/DE documentation for more information.