“The View Connection Server connection failed (null)”

There are a number of reasons why your clients might see this error while connecting to your View environment but the most recent is due to 2 Windows updates that went out recently: KB 2482017 or 2467023.

This error can occur on both View clients 4.0 and 4.5 prior to build 353760. VMW recommends updating all clients to this most recent build which can be found here:

http://www.vmware.com/download/download.do?downloadGroup=VIEW-450-CLIENT-PATCH

The 4.5 client works just fine for connecting to a View 4.0 environment. Other work-arounds include running the View client in compatibility mode or rolling back the 2 MS patches in question.

Read more here: VMW KB1034262