The Trusted Platform Module (TPM) was unable to unlock the drive… in Windows 10

Problem:

My system runs Windows 10 Pro. When I try to enable Bitlocker, and choose the option to “Run Bitlocker System Check”, it fails after reboot with the message:

The Trusted Platform Module (TPM) was unable to unlock the drive. Either the system boot information changed after choosing Bitlocker settings or the PIN did not match. If the problem persists after several tries, there may be a hardware or firmware problem.”

Resolution:

In the Start Search box type in Gpedit and press the Enter Key to launch Group Policy Editor.

Scroll down to Computer Configuration \ Administrative Templates \ Windows Components \ Bit Locker Drive Encryption \ Operating System Drives and double click on Require additional authentication at startup

Now make this policy Enabled.

TPM

 

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