-new- Acpi Msft0101 Driver 77 2021 Today

The root cause? Microsoft’s inbox driver (provided via Windows Update) was often generic or outdated. It failed to properly initialize the TPM firmware interface on certain hardware combinations, particularly when the BIOS was in “Discrete TPM” mode vs. “Firmware TPM” (fTPM).

Most modern versions of Windows 10 and 11 will automatically fetch this driver. Check Settings > Update & Security > Windows Update and look under "Optional updates." -NEW- Acpi Msft0101 Driver 77 2021

While Windows Update often handles these automatically, you may need a manual installation if you see a yellow exclamation mark in Device Manager. 1. Use Windows Update The root cause