Guided check
0/4 checkedMatch the symptom, then work through the safe checks.
1. What best matches what you observe?
2. Complete only the checks that are safe for you.
4 user-level checks are available in this guide.Stop immediately if any warning condition applies.
Show stop conditions
- The network belongs to an employer, school, hotel, or public venue
- Security software reports interception or certificate warnings
Likely causes
- The router or provider DNS service is unavailable
- A VPN, security filter, or custom DNS setting is failing
- The adapter has stale network information
- Only one browser or application is affected
Quick checks, in order
Test another device and website
Separate a network-wide outage from one-PC trouble.
Restart the router and PC
Allow both devices to rebuild their network state.
Disable VPN or custom DNS for one test
Return settings afterward if they are required.
Use Windows network troubleshooting
Avoid copying unknown command scripts into an elevated terminal.
What can the PC still reach?
IP addresses work but names do not
The symptom strongly points to DNS resolution.
Nothing on the internet works
The issue may be broader than DNS.
Only one browser fails
Check that browser’s proxy, secure DNS, extensions, and cache.
Stop and get qualified help when
Do not continue troubleshooting if any of these apply:
- The network belongs to an employer, school, hotel, or public venue
- Security software reports interception or certificate warnings
Official support and model manuals
Use the full model number from the rating label. The manufacturer manual is the deciding reference when codes differ by region or product family.
Frequently asked questions
Can changing DNS fix this?
It can help if the configured DNS service is unavailable, but it will not fix a dead internet connection.
Why does the problem affect only one device?
That device may have a custom DNS, VPN, stale adapter state, or security-filter issue.
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