As discussed in the other thread, Windows firewall is garbage for this particular type of problem: 1/ it's not novice friendly (your best suggestion thus far r

As discussed in the other thread, Windows firewall is garbage for this particular type of problem: 1/ it's not novice friendly (your best suggestion thus far required users to input dozens off lines of code into cmd.exe) 2/ it's defaults still allow Windows telemetry to get through (which was the exact thing the GP was trying to protect against) 3/ it's a pain in the arse to keep updated compared to any of the other suggestions made in this thread. If the only option was Windows firewall or nothing, then I'd suggest people go with a PiHole since it takes an equal amount of technical know how to get the initial set up done. But at least once PiHole is set up, it's self managing (unlike Windows firewall) and will have much saner defaults too. Thankfully though, there are other software firewalls for Windows that address the limitations I've described above. I've named one, another poster has listed a few others. If the option is software firewall or nothing, then I'd strongly recommend that user go with a third party one instead of relying solely on Windows firewall.