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TPM drivers

Trusted Platform Module interfaces, measured boot, protected keys, and TPM 2.0 platform requirements.

System & Storage Windows 11, Windows 10 Reviewed Aug 18, 2026

discrete TPM module seated on its board header, three-quarter view shown with

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TPM drivers we cover

tight crop on the TPM module and header pins

TPM driver

The TPM driver connects Windows to the Trusted Platform Module, letting BitLocker seal keys to Platform Configuration Registers and satisfying the Windows 11 TPM 2.0 requirement.

tpmUpdated Aug 18, 2026

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Quick facts

Hardware family: System & Storage
Works with: Windows 11, Windows 10
Last reviewed: Aug 18, 2026

Reference scope

DriverUpdateMax documents driver purpose, architecture, terminology, and compatibility. It does not distribute driver packages or provide repair, installation, or technical-support services.

What does a tpm driver do?

A Trusted Platform Module is a small, isolated cryptographic processor with its own protected storage. It performs a fixed menu of security operations: generating and storing keys that never leave the chip, hashing boot measurements, and signing attestation statements that prove what code the machine booted. The TPM driver, tpm.sys in Windows, is the transport that carries commands and responses between the OS and that processor over the TPM's command interface.

The module comes in three physical forms, and the driver abstracts all of them. A discrete TPM (dTPM) is a dedicated chip soldered to the board or on a header. Intel PTT and AMD fTPM are firmware TPMs, running the same TPM 2.0 command set inside a protected mode of the CPU rather than in separate silicon. To Windows they look alike, because the driver presents one standard interface regardless of the underlying implementation.

Read the full tpm driver explainer

Real hardware teardown of discrete TPM 2.0 module plugged into its motherboard header with small daughterboard, square security processor IC, female header connector, motherboard TPM header, close-up context — The main parts managed by a tpm driver and how they connect

Compatibility is model-specific

A driver is associated with hardware identifiers, an operating-system driver model, and a processor architecture. Devices in the same category can expose different controllers, firmware interfaces, and optional feature layers, so a category name alone does not establish package compatibility.

desktop PC using its installed TPM for operating system security with open case with small TPM module visibly installed on motherboard header, operating system sign-in screen with digital security icon, encrypted internal SSD, no physical padlock in a real hardware workspace — TPM driver working with the hardware and peripherals it supports

Where this driver fits in Windows

The tpm driver sits between Windows, the applications you use, and the physical hardware. This layered view shows where the driver translates operating-system requests into device actions.

Working computer setup showing TPM stack with encryption/sign-in, platform security stack, TPM driver, TPM module — The tpm driver between applications, Windows, and the physical device

Observable tpm device states

These observations can involve hardware, firmware, operating-system services, applications, or a driver. They are descriptive rather than diagnostic.

BitLocker demands its 48-digit recovery key on every boot even though the disk and hardware are unchanged
AMD fTPM causes brief, repeating stutters or audio dropouts during gaming or heavy I/O
Windows 11 setup reports the PC is unsupported because no TPM 2.0 is detected
The security processor shows a yellow triangle or 'device cannot start' in Device Manager
An anti-cheat system refuses to launch a game, citing a missing or non-compliant TPM 2.0
tpm.msc reports the TPM is not ready, or shows a 1.2 module where 2.0 is expected