Symptoms
- VPN app shows 'connecting' and never finishes
- Error message about authentication failing
- Connects but internet stops working entirely
- Worked before but suddenly stopped
Likely causes
- CommonExpired login credentials or sessionMany VPN services require periodic re-login.
- CommonNetwork blocking VPN trafficSome public Wi-Fi networks or workplaces actively block VPN connections.
- CommonOutdated VPN appVPN protocols and servers update, and old app versions can lose compatibility.
- PossibleWrong server selected or server temporarily downIndividual VPN servers can go offline for maintenance.
- PossibleFirewall or antivirus blocking the VPN appSecurity software can mistakenly treat VPN traffic as suspicious.
What to do
- Confirm you have a working internet connection without the VPN active.
- Sign out and back into the VPN app.
- Try a different VPN server location within the app.
- Update the VPN app to its latest version.
- Restart the computer and router.
- Temporarily disable firewall or antivirus software to test if it's blocking the connection.
- Contact the VPN provider's support if the issue is isolated to their service.
When to call a pro
For a work VPN, contact your IT department, since they may need to whitelist your device or reset access.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.