808bits

Windows OS Loader

FIPS 140-2 certificate #4545 · Microsoft Corporation · data as of 2026-10-09

Windows OS Loader, from Microsoft Corporation, holds FIPS 140-2 certificate #4545 at overall level 1. The validation is historical: agencies may keep the module in existing systems but not buy it new. Below are its algorithm certificates, its validation history, and the list moves this tracker has observed, which NIST does not date.

Historical. Moved to historical list due to sunsetting. Federal agencies may reference historical validations for existing systems only, not for new procurement. Observed moving to historical on 2026-09-22. It was one of the last FIPS 140-2 certificates, all moved at the 140-2 sunset on 2026-09-21.
Caveat: When operated in FIPS mode with module Boot Manager validated to FIPS 140-2 under Cert. #4484 operating in FIPS mode

Certificate

Certificate number4545
StandardFIPS 140-2
Statushistorical
Overall level1
Module typeSoftware-Hybrid
EmbodimentMulti-Chip Stand Alone
VendorMicrosoft Corporation · website
Software versions10.0.17763.10021 and 10.0.17763.10127
Hardware versionsIntel Xeon Silver 4114, Intel Xeon Gold 6230, Intel Xeon Platinum 8260 and Intel Xeon D-1559

Module description

Quoted from the NIST CMVP entry for this certificate.

The BitLocker® Windows OS Loader loads the boot-critical driver and OS kernel image files.

Security level exceptions

  • Design Assurance: Level 2

Approved algorithms (3)

AlgorithmCAVP certificates
AESC1577, C1583, C2044, C2049
RSAC1586, C2052
SHSC1577, C2044

Allowed algorithms

NDRNG

Tested configurations

  • Windows Server 2019 Datacenter Core (x64) running on a Dell PowerEdge R640 Server with an Intel Xeon Gold 6230 with PAA
  • Windows Server 2019 Datacenter Core (x64) running on a Dell PowerEdge R840 Server with an Intel Xeon Platinum 8260 with PAA
  • Windows Server 2019 Datacenter Core (x64) running on a Dell XR2 with an Intel Xeon Silver 4114 with PAA
  • Windows Server 2019 Datacenter Core (x64) running on a Rugged Mobile Appliance with an Intel Xeon D-1559 with PAA (single-user mode)

Validation history

DateTypeLab
2023-06-30InitialLeidos Accredited Testing & Evaluation (AT&E) Lab

Status timeline

As observed by this tracker's snapshots. NIST publishes no dates for list moves; observation began 2026-08-21, so earlier changes carry no date.

  • 2026-08-21: first observed by this tracker, status historical at the time of the earliest snapshot
  • 2026-09-22: observed moving from active to historical
  • Validation dates on record: 2023-06-30

Source documents