? about TPM-WMI 1796 errors

[eddie11013]

HP Pavilion Desktop PC TP01-2000a – winver – 25H2 build 26200.6901

So I kept seeing errors in ‘view reliability history’. Went to: Event Viewer / Windows Logs / System / Error. After filtering I saw a “lot” of these ‘errors’ TPM-WMI 1796. Google search says it regards ‘secure boot’ and that it needs to be enabled. So I go into ‘bios / security tab and I don’t see ‘secure boot’ but I do see TPM Device – Available and TPM state – enabled. I didn’t change anything.

Any suggestions on how to I resolve this issue?

So I went back into Bios, looked under Boot Order this time, and I saw 'secure boot' and it was enabled.  So why am I getting these 'errors' to enable 'secure boot'?

Thanks in advance

Thanks in advance

[Hawks_Eye · Accepted solution]

Hi @eddie11013 

Welcome to the HP Support Community! We're here to help you get back up and running.

You're seeing TPM-WMI 1796 errors despite Secure Boot being enabled because the issue likely stems from a recent Windows update or firmware interaction—not from your BIOS settings.

Here’s a clear breakdown of what’s happening and how to address it:

What the TPM-WMI 1796 Error Means

• Event ID 1796 typically logs:
  “The Secure Boot update failed to update a Secure Boot variable with error Unknown HResult Error code: 0x800700c1.”
• This error is triggered when Windows attempts to update Secure Boot variables via TPM but encounters a failure—often due to firmware communication issues or TPM driver inconsistencies.

Why You’re Seeing It Even Though Secure Boot Is Enabled

• Your BIOS shows Secure Boot is enabled, and TPM is active, which is correct.
• However, Windows may still fail to update Secure Boot variables if:
  • A recent Windows update (like KB5058379) introduced a bug.
  • The TPM firmware or UEFI firmware is slightly out of sync with Windows expectations.
  • There’s a driver mismatch or TPM provisioning issue.

Steps to Reduce or Eliminate the Error

Clear TPM via Windows (non-destructive):

• Go to Settings > Privacy & Security > Device Security > Security Processor Details > Security Processor Troubleshooting.
• Click Clear TPM.
• Your system will reboot. This does not erase your data but may reset TPM-stored keys (BitLocker users should suspend protection first).

Update BIOS and TPM Firmware:

• Visit the HP Software and Driver Downloads page for TP01-2000a.
• Download and install the latest BIOS update and TPM firmware update, if available.
• Restart your PC after each update.

Run Windows Security Health Check:

• Open Windows Security > Device Security > Core Isolation.
• Ensure Memory Integrity is enabled.
• Run System File Checker:
  sfc /scannow
  from an elevated Command Prompt.

Optional – Check for Known Conflicts:

• If the issue started after a specific update (like KB5058379), you may temporarily uninstall it via:
  • Settings > Windows Update > Update History > Uninstall Updates.

Should You Worry?

• If your system is stable, boots normally, and BitLocker or Secure Boot are functioning, this error is mostly cosmetic.
• However, keeping firmware and Windows fully updated ensures long-term stability.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye

[eddie11013]

Sorry for the late reply.  Your answer went to my 'spam' folder, since fixed.  Your answer resolved my issue.

Thank you

[Hawks_Eye]

Thanks for the update @eddie11013. 

You're very welcome—I'm glad to hear the issue is resolved! And no worries at all about the delay; it happens. 

If anything else crops up, TPM-related or otherwise, I’ll be here to help you sort it out.

You're awesome, and I'm honored to have been your go-to guide! 😊

Stay fantastic, and have an amazing day ahead! 

Regards, 

Hawks_Eye