Laptop firewall blocking connections incorrectly
4.5
The firewall prevents legitimate apps from accessing the internet.
Symptoms
- App can't connect
- "Blocked by firewall" alert
- Network error
Possible Causes
- Strict rules
- App not allowlisted
- Corrupt firewall config
Step-by-Step Fix
1
Check Allowlist
Go to Firewall settings and "Allow an app through firewall".
2
Reset Firewall to Default
Clears all custom rules that might be causing issues.
3
Identify Port
Manually open specific ports required by the application.
When to See a Technician
Public network profiles are much stricter than Private ones; check your network type.
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