VMware ESXi6.5u1 client support

I know VMware has provided the support for HTML5 based client to manage the VMware host. We want to use vSphere client6.0 to manage VMware ESxi 6.5u1.

I have one vSphere client with version 6.0 and two ESXi server with version6.5 and 6.5u1.

I have observed the below behavior of vSphere client and ESXi server.

I am able to access VMware 6.5 with vSphere client6.0
I am unable to access ESxi6.5u1 with vSphere client6.0 . It give me options for run installer or Save installer.

Can you please reply on my below queries?

if a can open ESXi6.5 with vSphere client6.0 then why i cannot open ESXi 6.5u1??
Where VMware has documented the compatibility of vSphere client with ESXi server?

Thanks in advance!!!

Solution

The compatibility matrix for the vSphere thick client is located here: http://partnerweb.vmware.com/comp_guide2/sim/interop_matrix.php#interop&24=&1=

I believe the thick client being operational with 6.5 ESXi hosts was a bug, and it was resolved in 6.5U1.

Also, be aware that the thick client has been deprecated and will no longer be available on future versions of vSphere: https://blogs.vmware.com/vsphere/2016/05/goodbye-vsphere-client-for-windows-c-hello-html5.html