Software blocked by firewall

4.5

The Windows Firewall or a third-party security app is preventing the software from accessing the network.

Symptoms
  • "Connection Refused"
  • App works when firewall is off
  • Security popup
Possible Causes
  • Missing firewall rule
  • Strict security profile

Step-by-Step Fix

1

Add Exclusion

Go to Firewall settings > Allow an app > Browse to the app's .exe file.

2

Check Third-Party Firewall

If you have Norton/McAfee, check their specific "Program Control" list.

3

Check Network Type

Ensure your network is set to "Private" if you are at home.

When to See a Technician

Firewalls often block "Inbound" connections by default, which breaks apps that act as servers (like games or file shares).

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