Browser showing "Certificate Error" on all sites
4.5
Every website you visit, including Google, shows a security warning.
Symptoms
- "Connection not private"
- HTTPS blocked
- Cannot browse
Possible Causes
- Wrong system time
- Antivirus SSL scanning
- Man-in-the-middle attack
Step-by-Step Fix
1
Check System Date/Time
90% of the time, this is caused by an incorrect clock.
2
Disable SSL Scanning
In your antivirus, turn off "Web protection" or "SSL/TLS filtering".
3
Check for Proxy/VPN
Ensure your traffic isn't being routed through a malicious server.
When to See a Technician
If your time is correct, your internet traffic is likely being "Intercepted" by a proxy or malware.
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