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Acpi Ven-msft Amp-dev-0101 🎯
If you’ve recently opened the Device Manager on your Windows PC (especially after an update or a new hardware installation) and spotted a yellow exclamation mark next an entry labeled ACPI VEN-MSFT AMP-DEV-0101, you’re not alone. This cryptic string of text can be intimidating, but it is a specific and usually harmless driver issue that is fixable in just a few minutes.
In this comprehensive article, we will break down exactly what “ACPI VEN-MSFT AMP-DEV-0101” means, why it appears, how it affects your system, and—most importantly—how to resolve it permanently.
On physical hardware, specifically on tablets, convertibles, and ultra-low-power laptops (Intel Atom, Core M, or ARM-based devices like the Surface Pro X), this device appears as part of Modern Standby (formerly Connected Standby).
In this role, MSFT0101 acts as a low-power co-processor interface for "Always On, Always Connected" (AOAC) functionality. It helps manage network connectivity and sensor activity while the screen is off. On properly configured AOAC systems, a specific driver from the OEM (like Intel Serial IO or Microsoft's own Surface firmware) should bind to this ID. acpi ven-msft amp-dev-0101
If you see it on a standard desktop or a non-AOAC laptop, it is likely a BIOS ghost—a leftover ACPI table entry that Windows can't find a driver for.
The identifier ACPI\VEN_MSFT&DEV_0101 (often shown as ACPI\MSFT0101 ) corresponds to the Trusted Platform Module (TPM) 2.0 . This is a security component used for features like drive encryption and Windows Hello. HP Support Community Why is it showing up as an "Unknown Device"? Windows 7/8 Compatibility
: These older operating systems do not support TPM 2.0 natively. To fix this, you generally need a specific hotfix (like for Windows 7 64-bit) or to update to Windows 10/11. BIOS/UEFI Settings : The device is often part of the Intel Platform Trust Technology (PTT) If you’ve recently opened the Device Manager on
found in the BIOS. If it's enabled in BIOS but the OS doesn't have the driver, it appears as "Unknown". kb.stonegroup.co.uk How to Resolve It ACPI\MSFT0101 there is any driver that can install this?
After aggregating data from Microsoft developer documentation, hardware forums, and driver analysis, the ACPI VEN-MSFT&DEV-0101 device is almost universally identified as:
The Microsoft Windows 10/11 Hardware Compatibility and Power Management Interface for Virtualized or Embedded Platforms. On properly configured AOAC systems, a specific driver
In practical terms, it serves one of two purposes:
There are three primary methods to resolve the ACPI\VEN_MSFT&DEV-0101 error and remove the "Unknown Device" entry.
If the error persists after all methods and you experience actual system instability:

