For older systems, you may need a specific hotfix, such as KB2920188 , to add TPM 2.0 support to the operating system. Troubleshooting Common Errors
If you see this device with a yellow exclamation mark in your Device Manager, follow these steps to resolve it: -NEW- Acpi Msft0101 Driver 77 2021
The device ID typically refers to the Intel Platform Trust Technology (PTT) or a Trusted Platform Module (TPM) 2.0 chipset component. For many users, this device appears as an "Unknown Device" in the Windows Device Manager after a fresh installation or major update. What is the ACPI MSFT0101 Device? For older systems, you may need a specific