It seems that the VSAN Health Plugin could break the vCenter webclient if it’s not installed correctly. After installing the MSI-Packge on the Windows vCenter server and logging in via the web client everything seemed ok at the begining, but after selectin the datacenter, a cluster or a host/vm the middle section whoich sould display dietalled informatons about the selected property did not load and stayed blank.

After some searching I found an interssting VMware KB-article which described my problem. My vCenter looked like the screenshoot in the below article.

https://communities.vmware.com/thread/510468?start=0&tstart=0

It seems that I made the mistake and installed the VSAN health plugin as a domain admin – and that just does not work.  After uninstalling the plugin, restarting the vCenter, logging in as a local admin, starting a command prompt with admin priviliged and restarting the installation again, it woked fine.

BTW. in the new VSAN health plugin releases VMware fixed the DRS-dependency and now its possible to also install the plugin without activated DRS.  🙂

Before you had to install the Plugin while your system had the evaluation licens where you could activate DRS. If you use a license like  Essentials Plus + VSAN that could be a real problem.