Description of the security update for Office 2016: December 14, 2021 (KB5002099)

Summary

This security update resolves a Microsoft Jet Red database engine and access connectivity engine elevation of privilege vulnerability. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2021-42293.

**Note:**To apply this security update, you must have the release version of Microsoft Office 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn’t apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home. (See What version of Office am I using?)

Known issues in this update

• After this update is installed, Microsoft Access databases that are stored on a network share can’t be accessed by multiple users simultaneously. To resolve this issue, see the following Knowledge Base article:

4484211 Database on network share can’t be accessed by multiple users in Office 2016

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

• Download security update 5002099 for the 32-bit version of Office 2016
• Download security update 5002099 for the 64-bit version of Office 2016

More information

Security update deployment information

For deployment information about this update, see Security update deployment information: December 14, 2021 (KB5008541).

Security update replacement information

This security update replaces previously released security update 5002032.

File hash information

File name		SHA256 hash
ace2016-kb5002099-fullfile-x86-glb.exe		3B1EBB1A99EAD0386961DA0C1160BE963E75847975701DA9F743E40F78572BC4
ace2016-kb5002099-fullfile-x64-glb.exe		52C77554828A77420CEF18637AFECC81431D58A870230EBF3972FD0E8F3DC0D2

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

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For all supported x86-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
acecore.dll	acecore.dll	16.0.5251.1000	1701256	23-Nov-21	01:46
acacedao.dll	acedao.dll	16.0.5149.1000	448992	23-Nov-21	01:46
acedao.dll	acedao.dll	16.0.5149.1000	448992	23-Nov-21	01:46
aceerr.dll	aceerr.dll	16.0.5095.1000	50088	23-Nov-21	01:46
acees.dll	acees.dll	16.0.5149.1000	646608	23-Nov-21	01:46
aceexch.dll	aceexch.dll	16.0.5095.1000	203200	23-Nov-21	01:46
aceexcl.dll	aceexcl.dll	16.0.5149.1000	409000	23-Nov-21	01:46
aceodbc.dll	aceodbc.dll	16.0.5095.1000	300008	23-Nov-21	01:46
aceoddbs.dll	aceoddbs.dll	16.0.4684.1000	26472	23-Nov-21	01:46
aceoledb.dll	aceoledb.dll	16.0.5164.1000	340400	23-Nov-21	01:46
acetxt.dll	acetxt.dll	16.0.5188.1000	174984	23-Nov-21	01:46
acexbe.dll	acexbe.dll	16.0.5215.1000	230328	23-Nov-21	01:46
expsrv.dll	expsrv.dll	7.1.1116	333704	19-Nov-21	02:15
vbajet32.dll	vbajet32.dll	7.1.1116	17800	19-Nov-21	02:15

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For all supported x64-based versions of Office 2016

File identifier	File name	File version	File size	Date	Time
acecore.dll	acecore.dll	16.0.5251.1000	2293128	23-Nov-21	01:54
acacedao.dll	acedao.dll	16.0.5095.1000	606192	23-Nov-21	01:54
acedao.dll	acedao.dll	16.0.5095.1000	606192	23-Nov-21	01:54
acees.dll	acees.dll	16.0.5095.1000	906192	23-Nov-21	01:54
aceexch.dll	aceexch.dll	16.0.4759.1000	259480	23-Nov-21	01:54
aceexcl.dll	aceexcl.dll	16.0.5095.1000	545696	23-Nov-21	01:54
aceodbc.dll	aceodbc.dll	16.0.4999.1000	352624	23-Nov-21	01:54
aceoddbs.dll	aceoddbs.dll	16.0.4513.1000	28536	23-Nov-21	01:54
aceoledb.dll	aceoledb.dll	16.0.5164.1000	441312	23-Nov-21	01:54
acetxt.dll	acetxt.dll	16.0.5188.1000	213920	23-Nov-21	01:54
acexbe.dll	acexbe.dll	16.0.5215.1000	283560	23-Nov-21	01:54
expsrv.dll	expsrv.dll	7.1.1116	504712	19-Nov-21	02:19
vbajet32.dll	vbajet32.dll	7.1.1116	20872	19-Nov-21	02:19

Information about protection and security

Protect yourself online: Windows Security supportLearn how we guard against cyber threats: Microsoft Security

Change history

The following table summarizes some of the most important changes to this topic.Date	Description
December 15, 2021	Added a “Known issues in this update” section to describe an issue that users may experience after installing this update.
December 22, 2021	Updated the “Known issues in this update” section to provide a resolution to the issue.