Microsoft Addresses Performance Problems in BitLocker with Hardware Acceleration
Significant enhancements have been made by Microsoft in the encryption characteristic of BitLocker specifically in view of addressing the performance degradation that has been experienced previously on encrypted drives. The recent release in the Windows 11 build introduced a solution for offloading the cryptographic processes to specific hardware.
How the New Feature Works
The BitLocker hardware acceleration was enabled in Windows 11 version 24H2 (with September updates) and version 25H2. This update does not transfer the whole cryptographic computation from the main processor into hardware security modules (HSMs) and trusted execution environments (TEEs).
As commented from Microsoft, it reduces the number of CPU cycles brought about through I/O by at least 70% relative to the previous software-based implementation.
Current System Requirements
Initially, this feature is going to be limited to just that system:
- Running Windows 11 version 24H2 or 25H2.
- Has an Intel vPro system.
- Employing the Pantera Lake family of processors Intel Core Ultra Series 3.
Microsoft has, however, said the listing of supported CPUs will be continually updated.
How to Check for Hardware Acceleration
You can check whether your PC is carrying the latest bitlocker feature. Run this command on console.
manage-bde -statusIn the results check for the "Encryption Method" section. If the system is compatible and this feature is active it will show being "Hardware acceleration."
