Windows 10 KB5087544 Patch Tuesday fixes Remote Desktop bug, brings Secure Boot change, more

Microsoft has released the May 2026 Patch Tuesday cumulative updates for Windows 10 under KB5087544. It adds Remote Desktop bug-fix and more.

It's the second Tuesday of the month, which means it's Patch Tuesday time again. As such, today, Microsoft is rolling out the monthly security update (also called "B release") for May 2026 on Windows 10 under the Extended Security Updates (ESU) program.

The new updates are being distributed under KB5087544, bumping up the builds to 19045.7291 and 19044.7291. You can find standalone links to download the new update on the Microsoft Update Catalog at this link.

• [Remote Desktop security warnings (known issue)] Fixed: The Remote Desktop Connection security warning dialog might render incorrectly in multi-monitor configurations with different display scaling settings. This issue might occur after installing the Windows security update released on April 14, 2026 (KB5082200).
• [Secure Boot]
  • This update enables dynamic status reporting for Secure Boot states in Windows Security App.
  • With this update, Windows quality updates include additional high confidence device targeting data, increasing coverage of devices eligible to automatically receive new Secure Boot certificates. Devices receive the new certificates only after demonstrating sufficient successful update signals, maintaining a controlled and phased rollout.
• [Daylight Savings Time] Update for Arab Republic of Egypt to support the government DST change order in 2023.

Some of the older Windows 10 versions have also received updates today, which have been listed below with their respective release notes (KB) linked as well as links to download them at Microsoft's Update Catalog:

Source

Hope you enjoyed this news post. Feedback welcome.

Posted Wednesday 13 May 2026 at 7:25 am AEST (my time).

News posts: 2023 5,800+ | 2024 5,700+ | 2025 5,700+ | 2026 (to end of April) 1,700

RIP Matrix