Default certificate expired for Enterprise service bus for Windows Server (ESB)

We have been using service bus for windows server 1.1 from a long time. Suddenly we came across a problem where ESB services stopped working and we got to know that the the certificate which was auto generated got expired. We are not able to find a relevant information which will solve our problems. We tried few options but we encountered lot of different issues such as:

1. We are not able to run any command and getting following error:

Certificate requested with thumbprint not found in the certificate store.



2. We thought of reinstalling the ESB but when we try to use "Leave farm" option to uninstall then we are not able to open ESB configuration screen.
Microsoft.ServiceBus.ConfigWizard has stopped working


I have got new certificate imported in local store so can you please tell me how to use this new certificate in ESB(instead of default one)?

I hope we will get rid of all problems if the certificate issue is resolved. We are facing this issue in our non production environment. But this issue is very critical as we don't want to run into similar issue on production so we want to know the solution to update the certificate and also how to renew the existing certificate(for production).

Awaiting your early response.

Thanks in advance,

-Ganesh