Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.
Work through these checks
0 of 3 complete01Flush the DNS cache: ipconfig /flushdns
Flush the DNS cache: ipconfig /flushdns.
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
02Check the C:\Windows\System32\drivers\etc\hosts file for suspicious entries
Check the C:\Windows\System32\drivers\etc\hosts file for suspicious entries.
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
03Set DNS to Cloudflare (1.1.1.1) or Google (8.8.8.8)
Set DNS to Cloudflare (1.1.1.1) or Google (8.8.8.8).
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
Possible causes
- Infected router with fake DNS records
- Malware modifying hosts file
- Public WiFi hotspot with manipulated DNS
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