Sorry for this long post, but this problem is driving me crazy.
I am building a new horizon 7.4 environment. I have two hosts dedicated to running RDSH servers for published apps. Originally, i deployed a new 2012r2 server from my default template (note that this template has been used to deploy hundreds if not thousands of VMs). I joined this new server to domain, did all the configuration, patching etc based on Carl Stahlhoods site for setting up an RDSH host. Then I cloned this server to two new servers (sysprepped of course) to be used as my RDSH farm servers. I created the farm in view administrator, attached an appstack with a single app in it and published that app. I was able to successfully launch that app so everything was good.
A few weeks ago, the servers went through our normal patching cycle and after patching came back as not compliant. so we installed the patches again, rebooted, not compliant. Upon troubleshooting we found that the patches would install, but when the servers were rebooted the patches would show as not installed. So i downloaded the patches to the C drive of one of the servers, installed the patches and rebooted again. Not only did the patches show not installed, but the patch files that I had downloaded to the C drive were gone. I thought maybe appvolumes had something to do with it, so i detached the appstack and tried again, same result. At this point, i didnt know what else to try, so i deleted these two VMs, but instead of cloning my RDSH "master" i deployed 2 new VMs from my original template and went through a manual configuration process on both of these. Installed all patches, etc, attached my appstack, recreated my farm in view administrator and republished my app. That was last week.
This morning i was re-mediating some security vulnerabilities and when i attempted to RDP to these 2 servers, all i got was a black screen for about 60 seconds and then it disconnected. So i power cycled one of them and tried to logon to the console, but i couldnt get ctrl-alt-delete to work. Again RDP gave me a black screen and then disconnected after 60 seconds. So i thought i would try copying a file to the C drive of one of them and rebooting. After the reboot, the file was gone just like I experienced after normal patching.
I have no snapshots on these. The original master RDSH VM that i created does not experience this issue. The only difference between that one and these new ones is the original master never had the view agent installed. My Appvolume Manager servers, file server, connection server etc, all were deployed from my original template and do not have this issue.
Has anyone else seen this happen with RDSH hosts or any server for that matter? Any help would be greatly appreciated.