KB5073724: he Windows core component, WinSqlite3.dll, has been updated

January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)

This security update includes fixes and quality improvements that are part of the following updates:

• December 9, 2025—KB5071546 (OS Builds 19045.6691 and 19044.6691)
• December 18, 2025—KB5074976 (OS Builds 19044.6693 and 19045.6693) Out-of-band

The following is a summary of the issues that this update addresses when you install this update. If there are new features, it lists them as well. The bold text within the brackets indicates the item or area of the change we are documenting.

• [Drivers] This update removes the following modem drivers: agrsm64.sys (x64), agrsm.sys (x86), smserl64.sys (x64) and smserial.sys (x86). Modem hardware dependent on these specific drivers will no longer work in Windows.
  - [Secure Boot] Starting with this update, Windows quality updates include a subset of high confidence device targeting data that identifies devices eligible to automatically receive new Secure Boot certificates. Devices will receive the new certificates only after demonstrating sufficient successful update signals, ensuring a safe and phased deployment.
• [WinSqlite3.dll] Fixed: The Windows core component, WinSqlite3.dll, has been updated. Previously, some security software might have detected this component as vulnerable.