Microsoft Office January updates fix Outlook crash issues


Level 85
Thread author
Honorary Member
Top poster
Content Creator
Malware Hunter
Aug 17, 2014
Microsoft has released the January 2021 non-security Microsoft Office updates with fixes for known issues impacting Windows Installer (MSI) editions of Office 2016 products.

Microsoft has also released non-security updates in Current Channel releases for Microsoft 365 Apps to address Excel crashes and Outlook hangs.

The KB4493166 update addresses an issue causing users to experience recurrent crashes while using Outlook 2016.

This update also fixes issues blocking justification texts when overriding a policy and causing the headers of Chinese messages to become unreadable when replying to or forwarding emails.

Although these are issued as non-security updates, this month Microsoft has also issued KB4484509 which comes with Access 2016 reliability improvements for Visual Basic for Applications (VBA) projects, and KB4493157 to improve Visual Basic for Applications (VBA) projects' signature scheme.
January 2021 non-security updates

This month's Office non-security updates can be manually installed from the Download Center or automatically by using the Microsoft Update service.

The updates only apply to perpetual versions of Office using Microsoft Installer (.msi)-based installers and do not apply to Microsoft 365 Apps.

The full list of updates and the Office products they apply to is embedded below.

Office Product
Knowledge Base article
Microsoft Access 2016​
Microsoft Office 2016​
Microsoft Outlook 2016​
Microsoft Project 2016​