Keycloak v12 Admin Login goes to Infinte Loop

Dear Sir/madam
We have keycloak which was working ,but suddenly after hardware movement, Keycloak
Admin Console upon clicking Login not opening
I could see Repeated hits going in Loop to backend
/auth/realms/master not opening.
Where /auth/realms/master/account page is opening

Note
The Keycloak is not behind any Proxy or webserver, we are trying to access directly keycloak Appserver,but unable to do from all browser [ IE , Chrome, Firefox]

What could be the issue , is there any new Windows Patch causing issue in cookies?