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 complete01Locate the hosts file inside System32\drivers\etc\ and reset its contents to the default empty layout.
Locate the hosts file inside System32\drivers\etc\ and reset its contents to the default empty layout..
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
02Flush the local DNS resolver cache to clear corrupted lookup tables.
Flush the local DNS resolver cache to clear corrupted lookup tables..
Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.
03Change network adapter settings to use secure public DNS servers (e.g. 1.1.1.1 or 8.8.8.8).
Change network adapter settings to use secure public DNS servers (e.g. 1.1.1.1 or 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
- Local malware execution utilizing administrator permissions to bypass write protections.
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