Public Key Match Failed Updated — Palo Alto Failed To Fetch Device Certificate Tpm

A Deep Dive into TPM, Device Certificates, and Authentication Failures

The fix invariably involves either re-synchronizing the certificate with the existing TPM key or—if corruption is confirmed—clearing the TPM and rebuilding the identity. Always test in a lab environment first, especially if BitLocker or other TPM-bound services are in use. A Deep Dive into TPM, Device Certificates, and

Windows 11 22H2 changed the default TPM key storage algorithm from RSA-2048 to ECC (elliptic curve) for new requests. The existing certificates were RSA. The TPM attempted to present the new ECC public key, but the old certificate still contained the RSA public key. A Deep Dive into TPM