Not able to Login to MMC Connect

If you are getting this error message. Clear your browser cache or use a browser that was never used to connect to MMC Connect before.

"The error below has occurred with the system. Consult the site administrator for further assistance.
Error (2I74E5-2022.03.14-01.53.37.AM): EnvDMIConnection:connect: IO Exception-java.net.ConnectException: Connection refused "