ERR_NETWORK_ACCESS_DENIED: What It Means and How to Fix It

What ERR_NETWORK_ACCESS_DENIED actually means

Unlike most network errors that come from the remote server, this one originates locally — Windows (or macOS) told Chrome "you are not allowed to make this network connection." The most common trigger is Windows Firewall blocking Chrome, either because a firewall prompt was declined, Chrome was updated and the new executable isn't in the allow-list, or a third-party security product added a blocking rule.

Most likely causes (ranked)

1. Windows Firewall blocking Chrome — either denied at a prompt or missing from the allow list
2. Third-party antivirus or firewall (Norton, McAfee, ZoneAlarm) blocking Chrome
3. Parental controls or family safety settings restricting browser access
4. Corporate MDM (Mobile Device Management) policy blocking non-approved browsers
5. Malware blocking browser access to prevent removal

How to fix ERR_NETWORK_ACCESS_DENIED

Step 1: Allow Chrome through Windows Firewall

Control Panel → System and Security → Windows Defender Firewall → Allow an app or feature through Windows Defender Firewall → Change settings → scroll to Google Chrome → check both Private and Public boxes → OK.

If Chrome isn't listed, click Allow another app → browse to C:\Program Files\Google\Chrome\Application\chrome.exe → Add.

Step 2: Check third-party firewall or antivirus

Right-click your security software in the system tray → disable protection temporarily → test Chrome. If it works, the security software is blocking it. Add Chrome to the application's allowed/trusted list, then re-enable protection.

Step 3: Check parental controls

Windows Family Safety: visit account.microsoft.com/family and check if browser time limits or content filters are applied to your account. Router-level parental controls can also block specific applications.

Step 4: Reset Windows Firewall to defaults

Control Panel → Windows Defender Firewall → Restore defaults. This removes all custom rules. After resetting, re-allow Chrome through the firewall (Step 1).

Step 5: Run an offline malware scan

If no firewall is blocking Chrome and the error persists, malware may be the cause. Windows Security → Virus & threat protection → Scan options → Microsoft Defender Offline scan → Scan now. This runs outside Windows before the OS loads, catching deeply embedded malware.

Frequently Asked Questions

Why does this affect Chrome but not other browsers?

Firewall rules are per-application. If Chrome was denied (by a declined prompt or a policy rule) but Edge or Firefox were not, only Chrome is blocked. Adding Chrome to the Windows Firewall allow list fixes it without affecting other browsers.

Can malware cause this error?

Yes — some malware specifically blocks browsers to prevent accessing security or removal tools. If no browser works, run Windows Defender Offline Scan or a bootable rescue drive to clean the system before troubleshooting network settings.