If you're attempting to set up BitLocker with the TPM, check which TPM driver is installed on the computer. When it's turned back on, Windows will reinitialize it If you have TPM 1.2 with Windows 11, the TPM might be turned off, and need to be turned back on, as described in Turn on the TPM. Also, ensure that in the UEFI settings, the TPM hasn't been disabled or hidden from the operating system If the TPM is a TPM 2.0 and isn't detected by Windows, verify that your computer hardware contains a Unified Extensible Firmware Interface (UEFI) that is Trusted Computing Group-compliant. For important precautions for this process, and instructions for completing it, see Clear all the keys from the TPM You can try clearing the TPM to the factory default values, allowing Windows to reinitialize it. If you find that Windows isn't able to initialize the TPM automatically, review the following information: 
This is a change from previous operating systems, where you had to initialize the TPM and create an owner password.
Windows automatically initializes and takes ownership of the TPM. With TPM 1.2 and Windows 11, you can also take the following actions:įor information about the TPM cmdlets, see TPM Cmdlets in Windows PowerShell. This article provides information how to troubleshoot the Trusted Platform Module (TPM):
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