Message Queuing could not validate server certificate in HTTPS scenario because the certificate was found in disallowed store. ...

Message Queuing could not validate server certificate in HTTPS scenario because the certificate was found in disallowed store. This means the certificate cannot be trusted. This event is logged at most once per %1 seconds. To change this setting, set \HKLM\Software\Microsoft\MSMQ\Parameters\Event2191 registry value to desired time in seconds.