SCCM admin, console works from all machines….
try a 8.1 machine at a remote site, “Configuration manager cannot connect to the site (FQDN of primary)”
Found this helpful article
Basically dump these entries into a text file, rename to .reg and import….
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ConfigMgr10\AdminUI\QueryProcessors\WQL] "Assembly Path"="C:\\Program Files (x86)\\Microsoft Configuration Manager\\AdminConsole\\bin\\AdminUI.WqlQueryEngine.dll"
"Depends On"=""
"Type"="Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine.WqlConnectionManager