There's a workaround for this issue, open a SR with support and state RP BZ146289.  Hope that helps, Idan Kentor RecoverPoint Corporate Systems Engineering [NAME]
We successfully upgraded our four RPAs to 5.0.1  Now when we login to our VNX storage arrays we are met with a Java login screen that wants us to Login to the RPRealm.   What is that?   I had a live chat with EMC and was told this is the RP software on the VNX trying to login to the RPAs in the attached cluster.  And RP 5.0.1 no longer supports or uses that.   VNX 5300 is using OE 05.32.000.5.225 VNX 5400 is using OE 5.33.009.5.186  What do we have to do to get rid of that nagging login screen?    
VNX now asking for RPRealm login since upg RPAs to 5.0.1