Connectivity blocked by firewall
4.5
A security wall is preventing an app or the whole system from accessing the internet.
Symptoms
- "Connection refused"
- App works on other networks
- Firewall notification
Possible Causes
- Strict security rules
- Work/School restrictions
- Misconfigured Windows Firewall
Step-by-Step Fix
1
Allow App through Firewall
Go to Firewall settings > Allow an app or feature > Check both Public and Private.
2
Temporarily Disable Firewall
Turn it off for 1 minute to see if the connection works; if so, you need a new rule.
3
Reset Firewall Defaults
Restores the standard rules that allow most common traffic.
When to See a Technician
Corporate firewalls often block specific "ports" used by games or VPNs.
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