Network stack corruption
4.5
The underlying software that handles internet connections is damaged, preventing all traffic.
Symptoms
- "No Internet"
- DNS errors
- Ping fails to local router
Possible Causes
- Malware
- Failed network update
- VPN driver crash
Step-by-Step Fix
1
Winsock Reset
Run "netsh winsock reset" in an elevated Command Prompt.
2
TCP/IP Reset
Run "netsh int ip reset" to rebuild the network protocol stack.
3
Flush DNS
Run "ipconfig /flushdns" to clear stale routing data.
When to See a Technician
A network stack reset is the "nuclear option" for fixing persistent connection issues.
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