I'm opening a case here on this, as this morning we discovered we are still having the issue of the Windows Search service being stopped or disabled on some (but not all) of our user's VMs.  This is after I have re-created AppStacks based on the new 2.14 template.  I have tried all suggestions in this thread, having sporadic users fixed but others not.  There is no consistency with the issues, so I'm hoping VMware can direct a better fix.  This is crazy that we should have to re-create or modify AppStacks that were previously created.