Please provide the your firewall runs and clarify whether it is managed by Panorama so I can tailor the next troubleshooting steps. Share public link
If the key has truly mismatched, you must clear the current TPM key and generate a new one, then grab the OTP from the support portal.
Troubleshooting "Palo Alto Failed to Fetch Device Certificate TPM Public Key Match Failed"
The full error usually appears in three locations: Please provide the your firewall runs and clarify
The cloud portal retains a public key fingerprint from a previous OS state, RMA swap, or an interrupted initial provisioning setup.
When the firewall writes to its secure storage, it updates the device certificate. If the power cuts or the process is killed mid-write, the certificate file becomes incomplete or zeroed out. The TPM, however, is hardware-hardened; it remembered the correct key. The software file, however, now expected a different (corrupted) key.
Disclaimer: The information above is based on community solutions and Palo Alto Knowledgebase articles available as of mid-2026. When the firewall writes to its secure storage,
He accessed the CLI via the console cable, bypassing the unresponsive management interface. > show system info > show system resources
This forces the client to re-negotiate TPM attestation from scratch.
If the firewall clock shifts even slightly out of sync with the CSP servers, the OTP or TPM handshake will fail immediately. Ensure your management plane is synchronized to an authoritative NTP pool: The software file, however, now expected a different
Palo Alto Networks hardware firewalls (such as the PA-400 series or PA-460) rely heavily on a built-in hardware TPM chip to store unique cryptographic claim keys. The error occurs under three specific conditions:
When the error occurs, step 4 breaks—the TPM's response doesn't align with the certificate the firewall expects.
The TPM chip secures the hardware keys. When a firewall fetches a certificate, it generates a key pair inside the TPM and sends the public key to Palo Alto. The "TPM public key match failed" error occurs when the public key the firewall presents does not match the key Palo Alto has on record.