Windows 10 · 2016 · Release · Security update (Patch Tuesday)

September 8, 2020—KB4577015 (OS Build 14393.3930)

All 2016 builds JSON — this build from the builds API

What's in this update

Updates time zone information for the Yukon, Canada. Updates to improve security when using Microsoft Office products. Updates to improve security in the Microsoft Store. Updates to improve security when Windows performs basic operations. Updates for storing and managing files.

From Microsoft's release notes for KB4577015.

Microsoft's known issues — KB4577015

  • Issue Known issue After installing KB4467684 , the cluster service may fail to start with the error “2245 (NERR_PasswordTooShort)” if the group policy “Minimum Password Length” is configured with greater than 14 characters. Workaround: Set the domain default "Minimum Password Length" policy to less than or equal to 14 characters. Microsoft is working on a resolution and will provide an update in an upcoming release.
  • Issue Known issue Accessing the Security Options data view in the Group Policy Management Editor (gpedit.msc) or Local Security Policy Editor (secpol.msc) might fail with the error "MMC has detected an error in a snap-in. It is recommended that you shut down and restart MMC" or “MMC cannot initialize the snap-in”. This occurs from the MMC window, when the console tree is expanded in the following sequence: select Computer Configuration, then Policies, then Windows Settings, then Security Settings, then Local Policies, then Security Options. The resulting error dialog provides options to continue using the Management Console to view other nodes normally. Note : This issue does not affect the application of the Workaround: This issue is resolved in KB4580346 .

Microsoft's release notes for KB4577015 ›

Known issues — reported on the forum

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In the news

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