Patchday: Microsoft Office December 2021 updates (14.12.2021) causes Access issues

Update[German]On December 14, 2021 (second Tuesday of the month, Microsoft Patchday), Microsoft has released several security-related updates for still supported Microsoft Office versions and other products. An RCE vulnerability in Excel is closed again. For Microsoft Access, however, an update causes massive problems. Here you can find an overview of the available updates.


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General information

The updates apply to the installable MSI version of Office (the click-to-run packages get the updates through other channels). An overview of the updates can be found on this web page (and here for December). Details are documented in the linked KB articles. Office 2019 does not appear in the list because it is distributed via click-to-run packages and receives security updates via the Office Update feature.

Office 2016

The following security updates have been released for Office 2016.

Details about the Office updates can be found in the linked KB articles.

Office Update KB5002099 Causes Access Issues

Update KB5002099 fixes vulnerability CVE-2021-42293  in the Microsoft Jet Red database engine and Access connectivity engine that allows elevation of privilege. However, readers of my German blog have reported issues with the Access engine after installing the update.

MS Access no longer works. Databases can now only be edited by one person at a time.

This was confirmed by other readers and another reader mentioned the above update as responsible.

Addendum: Microsoft has confirmed this issue and provided first fixes, see Microsoft confirms issues in all Access versions after December 2021 Update.


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Office 2013

Office 2013 requires Service Pack 1 for Microsoft Office 2013 to be installed. The following security updates have been released. The same security vulnerabilities as in Microsoft Office 2016 are fixed.

The updates for Office 2013 fix the same vulnerabilities as the updates for Office 2016, where update KB5002104 is also likely to cause the acess issues described above.

Other updates for Office/SharePoint Server

Microsoft has also released security updates for various versions of Microsoft SharePoint Server.

SharePoint Server Subscription Edition

SharePoint Server 2019

Microsoft SharePoint Server 2016

Microsoft SharePoint Server 2013

Similar articles:
Microsoft Office Patchday (December 7, 2021)
Microsoft Security Update Summary (December 14, 2021)
Patchday: Windows 10 Updates (December 14, 2021))
Patchday: Windows 11-Updates (December 14, 2021)
Patchday: Windows 8.1/Server 2012-Updates (December 14, 2021)
Patchday: Updates für Windows 7/Server 2008 R2 (December 14, 2021)
Patchday: Microsoft Office December 2021 updates (14.12.2021) causes Access issues
Update fixes Windows AppX installer 0-day vulnerability CVE-2021-43890 (used by Emotet)


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