The “This Site Can’t Be Reached” error is one of the most confusing messages your browser can throw at you. It looks like the website is completely offline — but in many cases, the problem is actually on your end. The tricky part? This error can come from several different causes, and most people only check one of them…
Need a quick verdict? Try our uptime checker to instantly see whether the website is truly down or just unreachable from your device.
Sometimes your browser simply gets stuck. Extensions, cached scripts, or temporary glitches can block a website from loading even when it’s perfectly online.
Try: closing all browser windows and reopening them.
Old or corrupted cached files can cause loading failures. Clearing your cache forces the browser to fetch fresh data from the website.
Clue: the site loads in Incognito mode but not normally.
Your internet connection may be misrouting traffic. Restarting your router resets your connection and often fixes the issue.
Test: try loading the site using mobile data.
Your device stores DNS records to speed up browsing. If those records are outdated, you may be sent to the wrong server — resulting in the “This Site Can’t Be Reached” error.
Windows: open Command Prompt and type ipconfig /flushdns
Mac: use Terminal and run sudo dscacheutil -flushcache
If your DNS provider is slow or experiencing issues, websites may fail to load even though they’re online.
Recommended DNS:
VPNs can block certain websites or cause routing problems. But sometimes the opposite is true — a VPN can bypass regional blocks or ISP issues.
If the site loads with a VPN: your ISP is the problem.
Security software sometimes blocks websites by mistake, especially after updates. If the site loads after disabling your firewall, you’ve found the culprit.
Warning: turn protection back on immediately after testing.
If none of the fixes above work, the website may truly be offline. The fastest way to confirm is to check uptime from multiple global locations.
Try our uptime checker — it gives you an instant yes/no answer.
The “This Site Can’t Be Reached” error doesn’t always mean a website is down. Browser issues, DNS problems, network blocks, and routing failures can all trigger this message even when the site is working perfectly.
Whenever you’re unsure, use our free uptime checker for a clear, instant verdict: