The October security and rollup update has been made available for all Click-to-Run installations of Outlook 2016, Outlook 2019, Outlook 2021 and Outlook as part of a Microsoft 365 subscription.
It contains 2 security updates and both are for shared Office components.
In addition, it contains 1 non-security fix related to Outlook Current Channel Version 2309, 7 fixes related to Outlook Monthly Enterprise Version 2308, and 3 fixes related to Outlook Semi-Annual Version 2302.
- Version 2309
- We fixed an issue where Microsoft account users were missing their Outlook add-ins.
- Version 2308
- We fixed an issue that caused the incorrect workdays to be displayed on shared-in calendars.
- We fixed an issue where the External Sender tag was not showing.
- We fixed an issue that caused Outlook to exit unexpectedly when inserting a Loop component into a meeting.
- We fixed an issue that caused Outlook to close unexpectedly in some search scenarios.
- We fixed an issue that caused Outlook to exit unexpectedly when users executed a search with the “All Mailboxes” scope.
- We fixed an issue that caused Outlook to close unexpectedly when viewing an email.
- We fixed an issue where an out-of-memory error would appear when sending email after seeing the WaitOnSend dialog pop up.
- Version 2302
- We fixed an issue where the Louder Labels sensitivity menu was not visible in the ribbon for users in the Semi-Annual Channel.
- We fixed an issue where the Microsoft To Do app failed to load for some customers.
- We fixed an issue that caused Outlook to exit unexpectedly when inserting a Loop component into a meeting request, as well as other meeting body issues.
Based on your release channel, you’ll be updated to the following version;
- Microsoft 365 Apps, Outlook 2016 Retail, Outlook 2019 Retail, Outlook 2021 Retail
Version 2309 (Build 16827.20166) - Monthly Enterprise
Version 2308 (Build 16731.20316)
Version 2307 (Build 16626.20222) - Semi-Annual Enterprise (Preview)
Version 2308 (Build 16731.20316) - Semi-Annual Enterprise
Version 2302 (Build 16130.20810)
Version 2208 (Build 15601.20796) - Outlook LTSC 2021
Version 2108 (Build 14332.20582) - Outlook 2019 Volume Licensed
Version 1808 (Build 10403.20013)
Note: Depending on your installation type, this update can be installed via the Update Now button in Outlook itself or the Microsoft Store. This update does not apply to msi-based installations of Office 2016.
