If your enterprise uses an internal, private Certificate Authority to issue VPN certificates, client devices will reject the connection by default.
Temporarily disable SSL inspection for your GlobalProtect gateway IP address on your security stack, or add the GlobalProtect app to your AV’s bypass list.
If multiple users are reporting this error simultaneously, the issue lies on the infrastructure side. Here is how network administrators can diagnose and resolve the issue within the Palo Alto Networks PAN-OS management console. 1. Verify Certificate Validity and Chain globalprotect vpn failed to verify certificate
Security tools like transparent proxies or web filters may intercept your traffic to scan for threats. These tools often swap the original VPN certificate with their own. GlobalProtect is generally "proxy-unaware" and will fail to verify these unexpected third-party certificates. Palo Alto Networks 4. Client-Side Discrepancies System Clock:
Open System Settings > General > Date & Time . Ensure "Set time and date automatically" is toggled on. 2. Confirm the Portal Address Typing errors can cause hostname mismatches. Open the GlobalProtect panel. Double-check the text in the portal field. If your enterprise uses an internal, private Certificate
Note: For the best results, collect the before contacting support to help them diagnose the issue faster 0.5.2. Summary Table Potential Cause "Certificate Not Trusted" Missing CA Root Install CA Root Certificate "Certificate Expired" Old Server Certificate Contact IT Department "Failed to Verify" Wrong Date/Time Set time automatically Random Error Corrupted Agent Reinstall GlobalProtect
The Network Admin Team
Local security software, firewalls, or public Wi-Fi hotspots are intercepting and altering the network traffic. Client-Side Solutions for End Users