Search for "Allow an app through Windows Firewall" in the Start menu. Click .

Find and ensure both Private and Public checkboxes are selected. Click OK and restart your browser.

Sometimes, a glitch in a firewall update or an overly strict heuristic scan will flag a safe website—perhaps a local business portal or a niche forum—as a threat. The firewall then creates a "deny" rule. When Chrome tries to fetch the page, the firewall intercepts the request and kills the connection locally. The browser interprets this sudden severance as an access denial.

Resetting your connection forces your computer to re-establish its network handshake.

In the corporate world and among privacy-conscious users, Proxies and VPNs are standard tools. They route your traffic through a different server to mask your location or bypass geographic restrictions. However, they are also a frequent source of the ERR_NETWORK_ACCESS_DENIED error.

Corrupted cache or problematic extensions can prevent pages from loading.