Windows 8.1 and Windows Server 2012 R2 ESU Analysis Changelog

January 21st, 2024

Update 2025-05-20

• Replaced April 2025 Servicing Stack Update (KB5055665) with May 2025 Servicing Stack Update (KB5058529).
• Replaced April 2025 Monthly Update (KB5055557) with May 2025 Monthly Update (KB5058403).
• Replaced April 2025 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22523) with May 2025 (6.3.9600.22577).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.

Update 2025-04-17

• Replaced February 2025 Servicing Stack Update (KB5052108) with April 2025 Servicing Stack Update (KB5055665).
• Replaced March 2025 Monthly Update (KB5053887) with April 2025 Monthly Update (KB5055557).
• Replaced January 2025 .NET Framework 4.8 Update (KB5049618) with April 2025 .NET Framework 4.8 Update (KB5055173).
• Replaced March 2025 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22470) with April 2025 (6.3.9600.22523).
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.

Update 2025-03-20

• Replaced February 2025 Monthly Update (KB5052042) with March 2025 Monthly Update (KB5053887).
• Replaced February 2025 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22417) with March 2025 (6.3.9600.22470).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.

Update 2025-02-17

• Replaced January 2025 Servicing Stack Update (KB5050115) with February 2025 Servicing Stack Update (KB5052108).
• Replaced January 2025 Monthly Update (KB5050048) with February 2025 Monthly Update (KB5052042).
• Replaced January 2025 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22371) with February 2025 (6.3.9600.22417).

Update 2025-01-21

• Replaced October 2024 Servicing Stack Update (KB5044411) with January 2025 Servicing Stack Update (KB5050115).
• Replaced December 2024 Monthly Update (KB5048735) with January 2025 Monthly Update (KB5050048).
• Replaced November 2024 .NET Framework 4.8 Update (KB5046260) with January 2025 .NET Framework 4.8 Update (KB5049618).
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Replaced December 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22318) with January 2025 (6.3.9600.22371).

Update 2025-01-01

• Replaced November 2024 Monthly Update (KB5046682) with December 2024 Monthly Update (KB5048735).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Replaced November 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22267) with December 2024 (6.3.9600.22318).

Update 2024-11-18

• Replaced October 2024 Monthly Update (KB5044343) with November 2024 Monthly Update (KB5046682).
• Replaced October 2024 .NET Framework 4.8 Update (KB5044026) with November 2024 .NET Framework 4.8 Update (KB5046260).
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Replaced October 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22221) with November 2024 (6.3.9600.22267).

Update 2024-10-11

• Replaced September 2024 Servicing Stack Update (KB5044410) with October 2024 Servicing Stack Update (KB5044411).
• Replaced September 2024 Monthly Update (KB5043138) with October 2024 Monthly Update (KB5044343).
• Replaced August 2024 .NET Framework 3.5.1 Update (KB5041945) with October 2024 .NET Framework 3.5.1 Update (KB5044012).
• Replaced August 2024 .NET Framework 4.8 Update (KB5041960) with October 2024 .NET Framework 4.8 Update (KB5044026).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Replaced September 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22175) with October 2024 (6.3.9600.22221).

Update 2024-09-12

• Replaced August 2024 Servicing Stack Update (KB5041588) with September 2024 Servicing Stack Update (KB5044410).
• Replaced August 2024 Monthly Update (KB5041828) with September 2024 Monthly Update (KB5043138).
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Replaced August 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22134) with September 2024 (6.3.9600.22175).

Update 2024-08-15

• Replaced July 2024 Servicing Stack Update (KB5040569) with August 2024 Servicing Stack Update (KB5041588).
• Replaced July 2024 Monthly Update (KB5040456) with August 2024 Monthly Update (KB5041828).
• Replaced July 2024 .NET Framework 3.5.1 Update (KB5039910) with August 2024 .NET Framework 3.5.1 Update (KB5041945).
• Replaced July 2024 .NET Framework 4.8 Update (KB5039890) with August 2024 .NET Framework 4.8 Update (KB5041960).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.
• Replaced July 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22074) with August 2024 (6.3.9600.22134).

Update 2024-07-13

• Replaced June 2024 Servicing Stack Update (KB5039340) with July 2024 Servicing Stack Update (KB5040569).
• Replaced June 2024 Monthly Update (KB5039294) with July 2024 Monthly Update (KB5040456).
• Replaced April 2024 .NET Framework 3.5.1 Update (KB5036627) with July 2024 .NET Framework 3.5.1 Update (KB5039910).
• Replaced May 2024 .NET Framework 4.8 Update (KB5037923) with July 2024 .NET Framework 4.8 Update (KB5039890).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Replaced June 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.22023) with July 2024 (6.3.9600.22074).

Update 2024-07-04

• Replaced April 2024 Servicing Stack Update (KB5037021) with June 2024 Servicing Stack Update (KB5037021).
• Replaced May 2024 Monthly Update (KB5037823) with June 2024 Monthly Update (KB5039294).
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.
• Replaced May 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.21972) with June 2024 (6.3.9600.22023).

Update 2024-05-16

• Replaced April 2024 Monthly Update (KB5036960) with May 2024 Monthly Update (KB5037823).
• Replaced April 2024 .NET Framework 4.8 Update (KB5036614) with May 2024 .NET Framework 4.8 Update (KB5037923).
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Replaced April 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.21924) with May 2024 (6.3.9600.21972).

Update 2024-04-10

• Replaced March 2024 Servicing Stack Update (KB5035968) with April 2024 Servicing Stack Update (KB5037021).
• Replaced March 2024 Monthly Update (KB5035885) with April 2024 Monthly Update (KB5036960).
• Replaced January 2024 .NET Framework 3.5.1 Update (KB5033900) with April 2024 .NET Framework 3.5.1 Update (KB5036627).
• Replaced February 2024 .NET Framework 4.8 Update (KB5034617) with April 2024 .NET Framework 4.8 Update (KB5036614).
• Updated Microsoft RSA Root Certificate Authority 2017.crl.
• Updated Microsoft EV ECC Root Certificate Authority 2017.crl.
• Updated Microsoft EV RSA Root Certificate Authority 2017.crl.
• Replaced March 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.21871) with April 2024 (6.3.9600.21924).

Update 2024-03-25

• Replaced February 2024 Servicing Stack Update (KB5034866) with March 2024 Servicing Stack Update (KB5035968).
• Replaced February 2024 Monthly Update (KB5034819) with March 2024 Monthly Update (KB5035885).
• Updated Microsoft ECC Root Certificate Authority 2017.crl.
• Updated MicRooCerAut_2010-06-23.crl.
• Updated Microsoft ECC Product Root Certificate Authority 2018.crl.
• Updated Microsoft ECC TS Root Certificate Authority 2018.crl.
• Replaced February 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.21813) with March 2024 (6.3.9600.21871).

Update 2024-02-16

• Replaced January 2024 Servicing Stack Update (KB5034587) with February 2024 Servicing Stack Update (KB5034866).
• Replaced January 2024 Monthly Update (KB5034171) with February 2024 Monthly Update (KB5034819).
• Replaced January 2024 .NET Framework 4.8 Update (KB5033915) with February 2024 .NET Framework 4.8 Update (KB5034617).
• Updated Microsoft Time Stamp Root Certificate Authority 2014.crl.
• Replaced January 2024 Manifest, Components Registry Key, and SideBySide Registry Key (6.3.9600.21765) with February 2024 (6.3.9600.21813).
• Added commands for importing the Manifest file.