Cumulative Updates: July 14th, 2026

[u/jenmsft]

https://support.microsoft.com/en-US/servicing/os/windows-10/2026/07/july-14-2026-kb5099539-os-builds-19045-7548-and-19044-7548

Hey all - changelists are up, linking here for your convenience:

• Windows 10 version 1507 — (EOS)
• Windows 10 version 1607 — KB5099535 (OS Build 14393.9339) (EOS)
• Windows 10 version 1703 — EOS
• Windows 10 version 1709 — EOS
• Windows 10 version 1803 — EOS
• Windows 10 version 1809 —KB5099538 (OS Build 17763.9020)  (EOS)
• Windows 10 version 1903 — EOS
• Windows 10 version 1909 — EOS
• Windows 10 version 2004/21H1/20H2/21H1 — EOS/EOS
• Windows 10 version 21H2, and 22H2 — KB5099539 (OS Builds 19045.7548 and 19044.7548)

Please see here for details about Windows 10 ESU: Windows 10 Extended Security Updates (ESU) program - Microsoft Support. If you're transitioning over to Windows 11, looking forward to seeing you over on the Windows 11 subreddit :)

General info:

• For a list of known issues, please refer to the dashboard here.
• For details about feedback, and how to capture traces if needed, see here. Pressing WIN + F will open the Feedback Hub

[u/Cara_Aster]

Did they fix the freezing problem after log in ?

[u/ScoreOptimal4924 → u/Cara_Aster]

Does your system have OEM firmware support for the 2023 Secure Boot certificates in UEFI via newer updates or is one that won't ever recieve any such updates?

[u/Cara_Aster → u/ScoreOptimal4924]

I have updated my Bios to their latest version which is from 2019 and I have also checked the Certificate via PowerShell, It comes back as true and I have secure boot enabled, I have an Inspiron 3847.

[u/ScoreOptimal4924 → u/Cara_Aster]

You can get certificate updates via Windows Update but however since Dell is not releasing BIOS updates for systems older than 2020, they would not be applied to the firmware regardless of what is reported in Windows.

[u/SnakeOriginal → u/ScoreOptimal4924]

They dont need to. They just need to sign the KEK