Well. That took some "doing". I started the upgrade in a server that was running Server Core. It said it had to upgrade the SQL server, but it couldn't. So I tried to upgrade SQL server from the command line, but that had problems, too.
So, I did a fresh install of Server 2016, with Desktop Experience. Installed the Microsoft updates, then installed App Volumes 2.16, but no volumes would mount. The App Volumes server had three HTTP errors listed in a row, and the login would just hang.
So I uninstalled App Volumes and reinstalled it. After it was reinstalled and rebooted, it was asking to join an existing App Volumes server. So I uninstalled it again, and reinstalled it, selecting the "overwrite the existing database" option. Success! At least, I could log in.
I still have the same problems, though. Firefox settings are lost WITHIN THE SAME SESSION. So if I load Firefox, change a bunch of settings, then close Firefox, then restart Firefox, it is like Firefox has never run. The speaker volume setting is not retained between sessions, either.
Does anyone know if the volume is a setting that should be retained in the User Profile Only writable? Any thoughts why the Firefox settings are not retained in the same session?
Thanks for any help!