Today is Patch Tuesday and as such Microsoft is pushing out new cumulative updates for Windows 10 PC and Mobile.

Build 14393.321 is now live for those on Production (non-Insiders) and Release Preview (e.g. no Slow or Fast Rings) and with it comes new fixes and improvements.

The PC build is listed under KB3194798 during the Windows Update process.

Update: More about the KB updates:

KB3192440 (for RTM)

KB3192441 (for 1511)

KB3194798 (for 1607)

There also seems to be some bifurcation with Release Preview on PC getting a cumulative update while Windows 10 Mobile does not.

Changelog for 14393.321

This update includes quality improvements. No new operating system features are being introduced in this update. Key changes include:

Improved reliability of Bluetooth and storage file system.

Addressed issue causing printer drivers to not install correctly after installing security update KB317005.

Addressed issue causing sign-in errors if a password is entered incorrectly or a new password doesn't meet password complexity requirements after installing security update KB3167679.

Addressed issue that required users to log out and log back in before using the application they installed using the Windows installer (MSI).

Improved support for networks by adding new entries to the Access Point Name (APN) database.

Addressed issue that was causing excessive battery drain on Windows 10 Mobile when connected to Wi-Fi.

Addressed issue in which setting up both fingerprint and iris recognition sometimes causes the sign-in to fail on Windows 10 Mobile.

Addressed issue that was causing high CPU usage on Windows 10 Mobile.

Addressed additional issues with multimedia playback, revised daylight saving time, authentication, Internet Explorer 11, and Windows Shell.

Security updates to Microsoft Edge, Internet Explorer 11, Windows registry, and diagnostics hub.

For more information about the complete list of affected files, see ﻿﻿﻿KB3194798﻿﻿﻿.