DNS_PROBE_FINISHED_NXDOMAIN in Chrome means the domain name doesn't exist or can't be found by DNS. Here's what causes it and how to fix it quickly.
The domain doesn't exist, has expired, or your DNS hasn't updated after a recent change.
Next step: In Command Prompt, run: nslookup thatdomain.com — if it fails there too, the domain itself is the problem. Try Google's DNS as a test: nslookup thatdomain.com 8.8.8.8
Your DNS server has failed or is unreachable.
Next step: Switch to Google Public DNS: Control Panel → Network → Adapter Settings → Properties → IPv4 → set Preferred DNS to 8.8.8.8 and Alternate to 8.8.4.4.
The site's DNS record changed and your cache has the old (now invalid) record.
Next step: Open Command Prompt as administrator and run: ipconfig /flushdns — then try the site again. This forces Chrome to look up the current DNS record.