Microsoft released a specific update, , to add support for TPM 2.0 to Windows 7 and Windows Server 2008 R2.
: If you are a Windows 7 user, it is recommended that you install the ACPI MSFT0101 driver to ensure optimal system performance and ACPI functionality. acpi msft0101 driver windows 7 free
The ACPI\MSFT0101 hardware ID refers to the . While Windows 10 and 11 support TPM 2.0 natively, Windows 7 was designed before this standard became common. Because Windows 7 doesn't recognize the module by default, it flags it as an unknown device. How to Fix the ACPI\MSFT0101 Driver Error Microsoft released a specific update, , to add
Because Windows 7 was released before TPM 2.0 became a standard, the operating system does not support this device natively. Below is the comprehensive guide to understanding, finding, and installing the necessary software to resolve this "Unknown Device" error. What is the ACPI\MSFT0101 Device? While Windows 10 and 11 support TPM 2
Lenovo was one of the few OEMs that released a dedicated for their ThinkPad series.
to save changes. The "Unknown Device" will no longer appear in Windows. Summary Table: Should You Install It? OS Version Need the Driver? Recommended Action Windows 7 64-bit (Ultimate/Enterprise) Yes (for BitLocker) Windows 7 64-bit (Home/Pro) Disable in BIOS or ignore Windows 7 32-bit (All versions) No (Not supported) Disable in BIOS to clear error
The MSFT0101 identifier is used by the system to recognize the or TPM 2.0 module used for credential storage and key management. While Windows 10 and 11 handle this automatically, Windows 7 requires the manual installation of the KB2920188 update to recognize the hardware.