October 3, 2019—KB4524157 (Monthly Rollup)

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Release Date:

Oct 03, 2019

Version:

Monthly Rollup

IMPORTANT This is a required security update that will be offered to all customers automatically. To help secure your devices, we recommend that you install this update as soon as a possible and restart your PC to fully apply the mitigations. Like all rollup updates, this update supersedes any preceding update.

Note This update does not replace the upcoming October 2019 monthly update, which is scheduled to release on October 8, 2019.

IMPORTANT Verify that you have installed the recommended updates listed in the How to get this update section before installing this update. For all updates starting with August 13, 2019, we strongly recommend that you install these updates to prevent any issues.

IMPORTANT Customers who have purchased the Extended Security Update (ESU) for on-premises versions of some operating systems must follow specific procedures to continue receiving security updates after extended support ends on January 14, 2020. For more information, see KB4522133.

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Improvements and fixes

This security update includes improvements and fixes that were a part of updates KB4516046 (September 10, 2019) and KB4516048 (September 24, 2019) and addresses the following issues:

Addresses an intermittent issue with the print spooler service that may cause print jobs to fail. Some apps may close or generate errors, such as the remote procedure call (RPC) error.

For more information about the resolved security vulnerabilities, please refer to the Security Update Guide.

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Known issues in this update

Symptom

Workaround

VBScript in Internet Explorer 11 should be disabled by default after installing KB4507437 (Preview of Monthly Rollup) or KB4511872 (Internet Explorer Cumulative Update) and later. However, in some circumstances, VBScript may not be disabled as intended.

This issue is resolved in KB4519976.

Applications and printer drivers that leverage the Windows Javascript engine (jscript.dll) for processing print jobs might experience one or more of the following symptoms:

Applications interacting with the V4 printer driver might close or error when printing. Issues might only be encountered when printing but might also be encountered at any time the app is running, depending on when the app interacts with the print driver.
The printer spooler service (spoolsv.exe) might close or error in jscript.dll with exception code 0xc0000005 causing the print jobs to stop processing. Only part of the print job might print and the rest might be canceled or error.

This issue is resolved in KB4519976.

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How to get this update

Before installing this update

You must install the updates listed below and restart your device before installing the latest Rollup. Installing these updates improves the reliability of the update process and mitigates potential issues while installing the Rollup.

The March 12, 2019 servicing stack update (SSU) (KB4490628). To get the standalone package for this SSU, search for it in the Microsoft Update Catalog.
The latest SHA-2 update (KB4474419) released September 10, 2019. If you are using Windows Update, the latest SHA-2 update will be offered to you automatically. For more information on SHA-2 updates, see 2019 SHA-2 Code Signing Support requirement for Windows and WSUS.

Afer installing the updates above, Microsoft strongly recommends that you install the latest SSU (KB4516655). If you are using Windows Update, the latest SSU will be offered to you automatically. To get the standalone package for the latest SSU, search for it in the Microsoft Update Catalog.

Install this update

Release Channel	Available	Next Step
Windows Update and Microsoft Update	Yes	None. This update will be downloaded and installed automatically from Windows Update.
Microsoft Update Catalog	Yes	To get the standalone package for this update, go to the Microsoft Update Catalog website.
Windows Server Update Services (WSUS)	Yes	This update will automatically synchronize with WSUS if you configure Products and Classifications as follows: Product: Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1 Classification: Security Updates