MARINE CORPS ENTERPRISE NETWORK (MCEN) MICROSOFT WINDOWS 11 MIGRATION UPDATE AND COORDINATING INSTRUCTIONS

R 201601Z NOV 24
MARADMIN 563/24
MSGID/MARADMIN/CMC DCI WASHINGTON DC//
SUBJ/MARINE CORPS ENTERPRISE NETWORK (MCEN) MICROSOFT WINDOWS 11
MIGRATION UPDATE AND COORDINATING INSTRUCTIONS//
REF/A/DOC/DOD CIO/ DOD MIGRATION TO MICROSOFT WINDOWS 11, 08 JUN
2022//
REF/B/MARADMIN /MARINE CORPS MICROSOFT WINDOWS 11 ADOPTION AND
REPORTING REQUIREMENTS/MARADMIN 340/22//
REF/C/MARADMIN/ MARINE CORPS MICROSOFT WINDOWS 11 ADOPTION AND
REPORTING REQUIREMENTS/MARADMIN 490/23//
REF/D/DOC/MCSC/USMC MODIFICATION INSTRUCTION, ENTERPRISE DESKTOP
STANDARD WINDOWS 11 SECURE HOST BASELINE IMAGE FOR WINDOWS-BASED END
USER DEVICES (EUD), 31 JUL 23//
REF/E/DOC/DOD CIO/DOD CIO FISCAL YEARS 2026-2030 CAPABILITY PLANNING
GUIDANCE, 25 JAN 24//
REF/F/DOC/DC I/MARINE CORPS ENTERPRISE NETWORK (MCEN) IMPLEMENTATION
PLAN, FY24-28, 25 JAN 24//
NARR/REF A IS DOD CIO MANDATE TO MIGRATE TO MICROSOFT WINDOWS 11
(WIN-11) OPERATING SYSTEM (OS) NO LATER THAN (NLT) 14 OCT 2025.
REFS B AND C ARE INITIAL AND INTERIM MARINE CORPS WIN-11 MIGRATION
GUIDANCE. REF D PROVIDES INSTRUCTIONS FOR THE INSTALLATION OF THE
MARINE CORPS ENTERPRISE DESKTOP STANDARDIZATION (MCEDS) WIN11 SECURE
HOST BASELINE IMAGE TO ALL MARINE CORPS WINDOWS-BASED PRINCIPAL END
ITEM END USER DEVICES (EUD) AND INCLUDES DISPOSAL INSTRUCTIONS FOR
NON-WIN-11 COMPLIANT EUDS. REF E IS DOD CIO CAPABILITY PLANNING
GUIDANCE TO ACHIEVE A 3-YEAR LIFECYCLE REPLACEMENT STANDARD FOR END
USER DEVICES. REF F IS THE MCEN IMPLEMENTATION PLAN.//
POC/TREVOR DANIEL/CIV/DCI IC4 /TEL: (571) 256-9082/EMAIL:
[email protected]//
POC/CHRISTOPHER DAY/CIV/MARFORCYBER G-36/TEL: (667) 812-6397/EMAIL:
[email protected]//
POC/TORWON MITCHELL/CIV/PEO DIGITAL PFM EUS/TEL: (703) 432-7917/
EMAIL: [email protected]//
POC/KEVIN ROGOWSKI/CIV/DC CD&I CAPABILITIES INTEGRATION OFFICER,
CE-INFO/TEL (703) 432-8673 / EMAIL: [email protected]//
GENTEXT/REMARKS/1. Purpose. This is a coordinated DC I, DC CD&I,
MFCC, and MCSC / PEO Digital message to provide an update on WIN-11
migration progress, identify actions required for the expeditious
decommissioning and disposal of legacy EUDs supporting the Windows
10 (WIN-10) OS, and to posture the Marine Corps for a sustainable
life cycle replacement standard for general purpose EUDs.
2.  Situation.
2.A. The ref (a), There are no waiver provisions for EUDs hosting a
Microsoft Windows OS that connect to DoD Information Networks
(DODIN). WIN-11 migration mandate applies to all functional areas
and program and non-program mission systems.
2.B. Based on the approved acquisition objective (AAO) for Table of
Authorized Material Control Number (TAMCN) A91007G general purpose
laptop computers, new hardware procurements required to support
WIN-11 migration are complete. Over 118,000 WIN-11 compliant TAMCN
A91007G EUDS have been imaged and shipped to Fleet Marine Force
(FMF) and Supporting Establishment (SE) organizations by the
Enterprise Staging and Delivery (ES&D) activity. PEO Digital End
User Services (EUS) anticipates all EUDs required for Enterprise
migration will be available to end users NLT 31 Jan 2025.
2.C. While steady WIN-11 migration progress has been made over the
last two years, a significant percentage of NIPR and SIPR EUDs are
still hosting the WIN-10 OS. The use of outdated EUDs hosting the
WIN-10 OS persists even though an ample supply of new WIN-11
compatible EUDs are available to meet all MCEN A91007G requirements
and eradicate all instances of the WIN-10 OS on the MCEN.
2.D. Additionally, over 20,000 EUDs managed by MCSC and affiliated
PEOs in support of tactical, mission or business systems host WIN-10
or earlier Microsoft OS versions and are not WIN-11 compliant.
These programs of record (PoR) require EUD replacements to host the
WIN-11 OS or transition to a Microsoft Long Term Service Channel
(LTSC) solution prior to 14 Oct 25.
2.E. Guidance in ref (e) for a three-year replacement standard
conflicts with the current MCEN EUD lifecycle replacement standard
of four years. As ref (f) is executed, it is imperative the Marine
Corps has a sustainable EUD lifecycle replacement standard based on
an updated and validated AAO that reflects future MCEN unification
and expanded EUD fielding.
3.  Mission. In accordance with ref (a), the Marine Corps will
execute the migration from Microsoft WIN-10 to WIN-11 no later than
the WIN10 EOS date of 14 Oct 2025, and plan for a sustainable
lifecycle replacement standard across the Fiscal Years Defense Plan
(FYDP).
4.  Execution.
4.A. Commander's Intent
4.A.1. The WIN-11 OS provides key improvements in cybersecurity
with built-in hardware isolation, advanced encryption and data
protection, improved network and system security and other
safeguards against evolving cybersecurity threats, all of which
contribute to increased readiness of the force.
4.A.2. Commercial software deployed on DoD networks must remain up
to date as end-of-life software introduces vulnerabilities that
threaten the integrity of our networks and operational data. The
WIN-10 OS reaches end of life and end of support on 14 Oct 2025.
The Marine Corps must migrate to WIN-11 prior to this date.
4.A.3. The Enterprise has procured and shipped sufficient assets to
rapidly complete migration to the WIN-11 OS and the elimination of
the WIN-10 OS on the MCEN and tactical extensions. As we enter the
final phases of the WIN-11 migration, actions are required to ensure
migration objectives are met, risks are identified and mitigated in
a timely manner, and a sustainable lifecycle replacement strategy is
developed.
4.B.  Tasks
4.B.1. MARFORCYBER
4.B.1.A. NLT 14 Oct 2025, be prepared to isolate all instances of
Microsoft WIN-10 OS on the MCEN, to include MCSC and affiliated PEO
PoR endpoints for which no approved plan of action and milestones
(POAM) to use a Microsoft LTSC solution has been submitted.
4.B.2. MCSC, PEO Land Systems, PEO Manpower, Logistics, and
Business Systems, and PEO DES Portfolio Managers (PfM).
4.B.2.A. There is no waiver to the DoD CIO WIN-11 mandate for end
points connected to the MCEN or some other portion of the DODIN. As
of 14 Oct 25, tactical, mission or business system PoR EUDs hosting
a Microsoft OS and connecting to the MCEN or another portion of the
DODIN must be WIN-11 compliant or those endpoints will be isolated
from the MCEN.
4.B.2.B. Tactical, mission or business systems hosting a Microsoft
OS but not connecting to the MCEN or other portions of the DODIN and
not able to migrate to WIN-11 must deploy an approved alternative
LTSC solution. Program managers and system owners should submit
POAMs to their local Information System Security Manager (ISSM) for
approval or risk denial of authority to operate (DATO).
4.B.2.C. Continue to report overall WIN-11 migration progress via
the WIN-11 Migration Dashboard at the link provided in paragraph
4.B.5.B. of this message.
4.B.3. DC CD&I
4.B.3.A. Ref (e) guidance prioritizes replacing end user devices to
achieve a 3-year lifecycle replacement standard in contrast to the
current 4-year MCEN EUD replacement standard. In order to
rationalize the Marine Corps' alternative 4-year standard and to
support future EUD investment decisions, conduct a review and
revalidation of the AAO for the A9100 series of TAMCN assets NLT 3Q,
FY-25.
4.B.4. DC I IC4
4.B.4.1. Continue to monitor and report on WIN-11 A91007G hardware
procurements and ES&D deliveries, the pace of WIN-10 elimination on
the MCEN MCDSUS, and MCSC and affiliated PEO PoR WIN-11 Migration
POAM submissions.
4.B.4.2. Coordinate with PEO Digital for the continued operation of
the WIN-11 Dashboard and support PEO Digital efforts to collect and
synchronize data from disparate sources to provide a comprehensive
WIN-11 migration operational picture.
4.B.4.3. Conduct a data call with the FMF and SE to identify those
assets shipped from ES&D, but not found on the MCEN MCDSUS to
determine the number of assets deployed on tactical extensions of
the MCEN, deployed to training venues, or pre-positioned ISO
exercises or real-world operational contingencies. This data call
will inform AAO revalidation discussed in paragraph 4.B.3.A. and
should be completed NLT 2Q, FY 25.
4.B.5. Commanders
4.B.5.A. Execution of the Enterprise WIN-11 migration requires
Commanders to take custody of their allotted replacement EUDs once
delivered to their issue points and ensure compliance with ref (d)
in a timely manner.
4.B.5.B. Commanders should refer to the WIN-11 Migration Dashboard
for the status of deliveries of tech refresh WIN -11 compliant EUDs
destined for their commands. The WIN-11 Dashboard can be accessed
at the following SharePoint link: https://app.mil.powerbigov.us/
groups/me/reports/040967fb-7fc2-4d67-aa38-7e9d9b6f16a2/Report
Section30f3524a87c7f509e611.
5. Administration and Logistics. Refer all questions to the points
of contact listed above.
6. Command and Signal. Release authorized by LtGen M. G. Carter,
Headquarters Marine Corps, Deputy Commandant for Information.//