Fixes for browser error codes and connection failures such as ERR_CONNECTION_RESET, with checks that separate a browser problem from a network or website problem.
Chrome shows ERR_CONNECTION_ABORTED? Follow these 9 steps covering extensions, VPN, antivirus, QUIC and network reset.
Firefox shows "Secure Connection Failed" with PR_CONNECT_RESET_ERROR? Try these 9 fixes: VPN, proxy, HTTP/3, antivirus, DNS and more.
ERR_CONNECTION_FAILED means Chrome could not make a connection at all. Test other sites, turn off VPN and proxy, check the firewall, reset the network stack and test extensions.
ERR_NO_BUFFER_SPACE means Windows could not allocate network buffer space for a new connection. Close heavy apps, turn off VPNs, reset the network stack and update the adapter driver.
NS_ERROR_NET_TIMEOUT means Firefox got no answer from a site in time. Test other sites and connections, then check VPN, proxy, add-ons, DNS over HTTPS and firewall settings.
ERR_TOO_MANY_REDIRECTS means a site is redirecting in a loop. Visitors should clear the site cookies, and site owners should check HTTPS, site address and CDN settings.
ERR_NAME_NOT_RESOLVED means your device could not look up the website address. Check for typos, flush DNS, restart the router and try a different DNS server.
Chrome shows ERR_CONNECTION_RESET? Diagnose browser, VPN, Windows network, router, and website causes with safe fixes in order.