Have just installed VSM 3.5.3 - am still using vCenter Server 5.1.0 and vSphere Client 5.1.0
I CAN access the VSM by IP in a web browser (if I ignore the expired certificate warning)
In vSphere Client, the plug-in is enabled, but when I click on it, the Dell logo presents and then I get an 'Application Blocked' message - "expired or not-yet-valid certificate"
My problem seems similar to other web postings about the expired VASA certificate.
Any help much appreciated.