This forces Windows to use the built-in system files that are already on your hard drive but weren't linked correctly.
Open the folder, select the .inf file (it is usually named msft0101.inf), and click Open, then OK.
Select the device that appears and click Next.
If you don’t use BitLocker, Windows Hello, or app-based authentication, you can disable the device in Device Manager instead of installing the driver. No security risk — just lost TPM functionality.
Would you like help identifying your exact PC model to find the right OEM driver link?
ACPI\MSFT0101 ID refers to the Intel Trusted Platform Module (TPM) 2.0
. This driver is essential for security features like Windows Hello, BitLocker, and meeting the system requirements for Windows 11.
In most cases, you do not need to download a standalone "MSFT0101" installer. Windows 11 and Windows 10 include this driver natively, or it is delivered through specific chipset packages. 1. The Primary Fix: Windows Update
Since this is a Microsoft-standardized ID, the driver is almost always bundled into Windows. Update & Security Windows Update Check for updates Look under View optional updates Driver updates
. If you see "Intel - Security" or "TPM," select and install it. 2. Manual Update via Device Manager
If the device appears with a yellow exclamation mark in Device Manager: Right-click the Start button and select Device Manager Security devices . You should see Trusted Platform Module 2.0
If it's listed as "Unknown Device," right-click it and select Update driver Search automatically for drivers Acpi Msft0101 Driver Download
. Windows will pull the MSFT0101 definition from its internal store. 3. Manufacturer Chipset Drivers
If Windows Update fails, the driver is part of your motherboard's Intel Management Engine (ME) For Laptops (Dell, HP, Lenovo):
Go to the support page, enter your serial number, and download the latest "Intel Management Engine Interface" "Chipset Driver." For Desktop Motherboards (ASUS, MSI, Gigabyte): Download the drivers from the specific motherboard model's support site. 4. Enable TPM in BIOS/UEFI
If the driver won't install or the device is missing entirely, the hardware might be disabled: Restart your PC and enter the (usually F2, Del, or F12). Navigate to the TPM Support Security Chip PTT (Intel Platform Trust Technology) . Save and exit. 5. Official Sources (Avoid Third-Party Sites)
download "MSFT0101.zip" from random "driver update" websites. These are often malware. Only use: Microsoft Update Catalog (Search for "TPM 2.0") Your PC manufacturer’s official support portal. for your laptop or motherboard model?
Finding an "Unknown Device" with the hardware ID ACPI\MSFT0101 in your Windows Device Manager can be confusing. This specific ID is almost always related to security and power management features, primarily the Trusted Platform Module (TPM) 2.0 or Intel Platform Trust Technology (PTT).
The following guide explains how to identify, download, and install the correct driver for your system. What is the ACPI MSFT0101 Device?
This device ID is a software interface that allows Windows to communicate with hardware-based security features.
Compatibility: While Windows 8, 10, and 11 typically include built-in support for this device, Windows 7 does not support it natively and often requires a specific hotfix. How to Fix the "Unknown Device" ACPI\MSFT0101
Depending on your operating system and hardware manufacturer (like HP, Dell, or Lenovo), you have several ways to resolve this: 1. Enable TPM/PTT in the BIOS
If the device appears with a yellow exclamation mark, it might be disabled in your system's firmware.
Restart your computer and enter the BIOS/UEFI (usually by pressing F2, Del, or Esc during boot). Navigate to the Security or Advanced tab.
Look for TPM State, Intel Platform Trust Technology (PTT), or Security Chip and ensure it is set to Enabled.
Save changes and exit. Windows should now recognize the device automatically. 2. Download Drivers from Manufacturer Support
Most major manufacturers provide a "Security" or "Chipset" driver package that includes support for this device.
Intel: You can use the Intel Driver & Support Assistant to automatically scan for missing chipset or security drivers. 3. Windows 7 Specific Solution (Hotfix KB2920188)
Windows 7 does not natively support TPM 2.0. If you are using this OS, you must install a specific Microsoft Hotfix. ACPI\MSFT0101 there is any driver that can install this?
Two less common reasons:
A) TPM is disabled in BIOS:
B) Faulty or missing TPM firmware (rare):
Follow these steps in order to resolve the issue safely.
You do not normally download a standalone "ACPI MSFT0101" driver. It is part of your chipset or firmware (BIOS) drivers. Windows usually installs it automatically.
If you see a yellow triangle in Device Manager, the fix is usually installing the latest BIOS/TPM firmware from your PC manufacturer.
Go to your PC manufacturer's support site and download the latest Chipset Driver for your exact model.
Last Updated: October 2023 Product Compatibility: Windows 10, Windows 11, Windows 8/8.1, Windows 7
Let Windows Update search for drivers:
Install OEM drivers:
Use OEM utility tools:
Roll back driver:
Troubleshoot touchscreen:
If nothing works, use System Restore or contact OEM support.
This forces Windows to use the built-in system files that are already on your hard drive but weren't linked correctly.
Open the folder, select the .inf file (it is usually named msft0101.inf), and click Open, then OK.
Select the device that appears and click Next.
If you don’t use BitLocker, Windows Hello, or app-based authentication, you can disable the device in Device Manager instead of installing the driver. No security risk — just lost TPM functionality.
Would you like help identifying your exact PC model to find the right OEM driver link?
ACPI\MSFT0101 ID refers to the Intel Trusted Platform Module (TPM) 2.0
. This driver is essential for security features like Windows Hello, BitLocker, and meeting the system requirements for Windows 11.
In most cases, you do not need to download a standalone "MSFT0101" installer. Windows 11 and Windows 10 include this driver natively, or it is delivered through specific chipset packages. 1. The Primary Fix: Windows Update
Since this is a Microsoft-standardized ID, the driver is almost always bundled into Windows. Update & Security Windows Update Check for updates Look under View optional updates Driver updates
. If you see "Intel - Security" or "TPM," select and install it. 2. Manual Update via Device Manager
If the device appears with a yellow exclamation mark in Device Manager: Right-click the Start button and select Device Manager Security devices . You should see Trusted Platform Module 2.0
If it's listed as "Unknown Device," right-click it and select Update driver Search automatically for drivers
. Windows will pull the MSFT0101 definition from its internal store. 3. Manufacturer Chipset Drivers
If Windows Update fails, the driver is part of your motherboard's Intel Management Engine (ME) For Laptops (Dell, HP, Lenovo):
Go to the support page, enter your serial number, and download the latest "Intel Management Engine Interface" "Chipset Driver." For Desktop Motherboards (ASUS, MSI, Gigabyte): Download the drivers from the specific motherboard model's support site. 4. Enable TPM in BIOS/UEFI
If the driver won't install or the device is missing entirely, the hardware might be disabled: Restart your PC and enter the (usually F2, Del, or F12). Navigate to the TPM Support Security Chip PTT (Intel Platform Trust Technology) . Save and exit. 5. Official Sources (Avoid Third-Party Sites)
download "MSFT0101.zip" from random "driver update" websites. These are often malware. Only use: Microsoft Update Catalog (Search for "TPM 2.0") Your PC manufacturer’s official support portal. for your laptop or motherboard model?
Finding an "Unknown Device" with the hardware ID ACPI\MSFT0101 in your Windows Device Manager can be confusing. This specific ID is almost always related to security and power management features, primarily the Trusted Platform Module (TPM) 2.0 or Intel Platform Trust Technology (PTT).
The following guide explains how to identify, download, and install the correct driver for your system. What is the ACPI MSFT0101 Device?
This device ID is a software interface that allows Windows to communicate with hardware-based security features.
TPM 2.0 / Intel PTT: It is a core component for modern security features like BitLocker drive encryption and Windows Hello.
Compatibility: While Windows 8, 10, and 11 typically include built-in support for this device, Windows 7 does not support it natively and often requires a specific hotfix. How to Fix the "Unknown Device" ACPI\MSFT0101
Depending on your operating system and hardware manufacturer (like HP, Dell, or Lenovo), you have several ways to resolve this: 1. Enable TPM/PTT in the BIOS
If the device appears with a yellow exclamation mark, it might be disabled in your system's firmware.
Restart your computer and enter the BIOS/UEFI (usually by pressing F2, Del, or Esc during boot). Navigate to the Security or Advanced tab.
Look for TPM State, Intel Platform Trust Technology (PTT), or Security Chip and ensure it is set to Enabled.
Save changes and exit. Windows should now recognize the device automatically. 2. Download Drivers from Manufacturer Support
Most major manufacturers provide a "Security" or "Chipset" driver package that includes support for this device.
Intel: You can use the Intel Driver & Support Assistant to automatically scan for missing chipset or security drivers. 3. Windows 7 Specific Solution (Hotfix KB2920188)
Windows 7 does not natively support TPM 2.0. If you are using this OS, you must install a specific Microsoft Hotfix. ACPI\MSFT0101 there is any driver that can install this?
Two less common reasons:
A) TPM is disabled in BIOS:
B) Faulty or missing TPM firmware (rare):
Follow these steps in order to resolve the issue safely.
You do not normally download a standalone "ACPI MSFT0101" driver. It is part of your chipset or firmware (BIOS) drivers. Windows usually installs it automatically.
If you see a yellow triangle in Device Manager, the fix is usually installing the latest BIOS/TPM firmware from your PC manufacturer.
Go to your PC manufacturer's support site and download the latest Chipset Driver for your exact model.
Last Updated: October 2023 Product Compatibility: Windows 10, Windows 11, Windows 8/8.1, Windows 7
Let Windows Update search for drivers:
Install OEM drivers:
Use OEM utility tools:
Roll back driver:
Troubleshoot touchscreen:
If nothing works, use System Restore or contact OEM support.
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