The Connector server fails to read Skype attributes in AD with the following error message:
JNDI: [LDAP: error code 1 - Unable to get Skype for Business attributes: System.Management.Automation.Remoting.PSRemotingTransportException: Starting a command on remote server failed with the following error message : The request for the Windows Remote Shell with ShellId XXXXXXX-YYYYY-ZZZ-WWWWWWW failed because the shell was not found on the server. Possible causes are: the specified ShellId is incorrect or the shell no longer exists on the server. Provide the correct ShellId or create a new shell and retry the operation. For more information, see the about_Remote_Troubleshooting Help topic.
The only way to work around it is to restart Connector Server
Identity Suite 14.3
Standalone or Virtual Appliance