Solved BitLocker recovery key prompt on every reboot after power outage

• Verify the TPM is healthy.
  • Press Win + R, type tpm.msc, and press Enter.
  • At the top, it should say something like "The TPM is ready for use."
  • If it reports errors or that the TPM isn't ready, that's no bueno.
• Check whether Windows is recording BitLocker recovery events.
  • Open Event Viewer.
  • Go to Applications and Services Logs → Microsoft → Windows → BitLocker-API → Management.
  • Look for events that occur at the time of boot. That usually tells you why BitLocker entered recovery mode.

Flash said:

After a recent power outage, my Windows 11 Home PC asked for my BitLocker recovery key to start up. Now, it prompts for the key on every single restart or reboot.

After doing some research, I found that I have both of these suspect updates installed:
- KB 5083769
- KB 5082052

Click to expand...

• Restart the computer and enter the BIOS/UEFI setup.
  • Look for TPM, Intel PTT or AMD fTPM. Maybe it says something like "security device."
  • Make sure it is Enabled.
  • Resist any urge to clear the TPM. Do not.

1. Shut the device down, unplug power, remove the battery if present, and hold down the power button for about 60 seconds. This will drain any residual power. Plug everything back in, power up, and make sure the UEFI still shows the TPM is available and enabled. Then check Windows again.
2. Check for a UEFI update from your computer or motherboard manufacturer. A power failure can expose an existing firmware bug or leave firmware in an inconsistent state. Updating (or, in some cases, reflashing the same version) often restores TPM detection.
3. Load UEFI defaults. Save and reboot. Re-enter the UEFI. Verify TPM is still enabled. Boot Windows and check Get-Tpm again.