After installing Symantec Endpoint Protection (SEP) 14.3 on Windows 10 clients the regsvr32.exe process hangs.
Symantec Endpoint Protection 14.3
Windows 10 1903 and 1909
This issue is currently under investigation. The article will be updated once a solution is found.
Set an Application Control exception for C:\Windows\System32\regsvr32.exe.