Failure to add hosts to ALM PC 11

Brand new installation of PC 11 Hosts with Patch 6 connecting to ALM Patch 9.

 

When trying to connect Hosts to ALM, I am getting error messages like attached, and Host installation invalid.

 

I have uninstalled, deleted IUSR_METRO when uninstalling, removed and deleted the folder, rebooted, reinstalled and installed patch 6 on top, but get the same error. This is getting very frustrating!