> show system info | match version > show system upgrade-install-history
If this is a known bug (e.g., PAN-238792), a newer maintenance release may fix it. Conversely, if the issue appeared after an upgrade, you may need to revert to a more stable version 1.2.5. Verification To verify the fix: Go to .
For PAN-OS 12.1.x, PAN-313623 remains a known issue in versions 12.1.3, 12.1.4, 12.1.5, and 12.1.6. A simple reboot of the affected firewall will clear the temporary files and allow the certificate fetch to succeed.
Excluded GlobalProtect processes ( PanGPA.exe , PanGPS.exe ) from Credential Guard’s protected process list via Group Policy: > show system info | match version >
: An existing or corrupted device certificate on the firewall prevents the retrieval of a new one.
┌────────────────────────┐ Root Shell Access ┌─────────────────────────┐ │ Palo Alto Firewall │ ──────────────────────────> │ TAC Actions: │ │ (TPM Match Failure) │ <────────────────────────── │ 1. Purge old cert cache │ └────────────────────────┘ Challenge/Response │ 2. Reset cloud binding │ Handshake └─────────────────────────┘
Because regular administrative accounts lack underlying operating system write access, a TAC engineer must perform a to unlock access to the firewall's root Linux shell. For PAN-OS 12
: Some users report that performing a commit force from the CLI can resolve synchronization issues between the management plane and the hardware.
Then, force re-enrollment:
The Failed to fetch device certificate.TPM public key match failed. error is a complex issue that can stem from a TPM hardware state mismatch, a known software bug causing disk space exhaustion, or environmental factors like connectivity problems. While basic steps like verifying NTP, generating a new OTP, performing a commit force , and rebooting the firewall offer low-risk initial actions, the most definitive resolution for a persistent TPM public key mismatch often requires temporary root access from Palo Alto Networks Support. For disk-related issues, a reboot is an effective immediate workaround, and staying current with PAN-OS maintenance releases is the best long-term prevention. Always open a support case for persistent issues, as they have the tools and access required to safely repair the firewall's internal certificate state. generating a new OTP
Before modifying network parameters or requesting higher-level support, trigger a structural force commit via the Command Line Interface (CLI) to flush stuck management server tracking loops.
Here is a structured troubleshooting guide based on current 2026 scenarios. 🔥 Top Fix: The "Clear and Re-generate" Process