Minimalfirewall: Minimal Firewall is a portable Windows firewall without requiring custom kernel modifications or disabling core isolation
Privacy Guides Community [Unofficial]
May 14, 2026
It’s a simple workaround, I had removed the MFW prefix, which allowed Windows to override those rules. Now adding back the prefix by default, they exist as separate rules, and block rules override allow rules.
I attempted to disable all Windows-created rules by default, but that would lead to ongoing maintenance to figure out every service and app necessary for internet, which gets complicated when dealing with WSL + VPNs. So in reverse, users can look at the audit log and determine if they want to block and Windows-created rule that they don’t already have a rule for.
Discussion in the ATmosphere