Starting with Windows 10 build 16193, Windows Firewall has been renamed to Windows Defender Firewall.
Windows Firewall can help prevent hackers or malicious software from gaining access to your PC through the Internet or a network.
Windows Defender Firewall blocks unauthorized network traffic flowing into or out of the local device. Windows Defender Firewall also works with Network Awareness so that it can apply security settings appropriate to the types of networks to which the device is connected.
The Windows Defender Firewall with Advanced Security Administration with Windows PowerShell Guide provides essential scriptlets for automating Windows Defender Firewall management. It is designed for IT pros, system administrators, IT managers, and others who use and need to automate Windows Defender Firewall management in Windows.
Maybe there’s an answer to be found of what’s happening.
If it blocks unauthorized network traffic flowing into or out of the local device.
And if it has a Network Awareness so that it can apply security settings appropriate to the types of networks to which the device is connected.
Possibly of GlassWire being seen as Trogan:Win32/BlockMsav.A!reg for reasons as doing like things as the Windows Defender Firewall.
Just fishing to linking possibilities…