Office 365

The New office 365 updates and history. Word, Excel, PowerPoint, and OneNote are all included in the Office 365 bundle. Subscribers to Office 365 and Microsoft 365 get the most recent version of Microsoft Office, which is presently Office 2019.

They also get more regular software updates than individuals who buy Office 2019 without a subscription, giving them access to the most recent features, security patches, and bug fixes.

However, keeping track of the changes in each update and knowing when they’ll be released might be difficult. Following are summaries of the updates to Office 365/Microsoft 365 for Windows, with the most recent releases presented first. As fresh updates become available, we’ll update this page.

Version 2105 (Build 14026.20308) Release date: June 18, 2021

This version corrects number of minor issues, including one in Outlook that caused users to see an unexpected property change prompt after dismissing message they had replied to or forwarded, and another that caused Office to crash when reopening specific files across the full Office suite.

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Version 2105 (Build 14026.20270) Release date: June 8, 2021

This version includes security updates and fixes a number of minor bugs. One in Excel that caused extra entries to appear in the Excel Add-in list for some users, one in Outlook that caused it to close when interacting with Outlook Mail or Calendar Views, and one in the entire Office suite that caused a performance regression when opening SyncBacked files are among the bugs fixed. Access, Excel, Outlook, and the rest of the Office suite are all getting security updates.

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Version 2105 (Build 14026.20246) Release date: May 24, 2021

Teams now have nearly two dozen new features, including the ability for anonymous users to join a Live Event and present during it, the ability to schedule and deliver webinars for up to 1,000 people at once, and the ability to create group chats that include people outside of their organization who use Teams.

Documents encrypted with sensitivity labels can now be AutoSaved and co-authored in real-time in Word, Excel, and PowerPoint. There are also a number of issues that have been resolved, including a bug in Word that prevented the Editor Pane from opening and a bug in PowerPoint that prevented some users from using the Reuse Slides option.

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Version 2104 (Build 13929.20386) Release date: May 18, 2021

This version addresses two issues with Outlook: one that caused the person’s picker in Outlook to grow upward instead of downward for perpetual license users, and another that caused the feedback option to disappear for users of the Office Perpetual 2021 preview.

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Version 2104 (Build 13929.20372) Release date: May 11, 2021

This version addresses two issues with Outlook: one that caused the person’s picker in Outlook to grow upward instead of downward for perpetual license users, and another that caused the feedback option to disappear for users of the Office Perpetual 2021 preview.

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Version 2104 (Build 13929.20296) Release date: April 29, 2021

New linked data types in Excel, enhanced collaboration and a dark mode in Word, a collection of ready-made images in Visio, and the option to generate an out-of-office message in Teams are all included in this version. 

There are also a number of bug fixes, including one in Excel that prevented some automation add-ins from loading, another in Excel that caused users to see signatures vanish unexpectedly, one in Project that prevented users from removing projects from the resource pool, and one in Word that prevented some texts from being visible when reading in dark mode.

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Version 2103 (Build 13901.20400) Release date: April 13, 2021

This version of Office provides security upgrades and resolves a number of minor issues. Bugs in Excel, Outlook, PowerPoint, and Word that caused resource contention while drawing an image have been addressed.

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Version 2103 (Build 13901.20336) Release date: April 2, 2021

This version solves an issue in Outlook where a component of Outlook used by MAPI-enabled programs on computers with ARM processors caused searches to fail or put extra stress on the computer as background apps resumed frequently, causing searches to fail or putting more load on the computer.

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Version 2103 (Build 13901.20312) Release date: March 30, 2021

Several new features are included in this build, including meeting suggestions when searching for someone in Outlook, the ability to send a copy of email messages or conversations from Outlook, including attachments, into Teams chats and channels, and the ability to draught documents with your voice in Word.

A number of issues were also fixed, including one that caused Outlook to crash while synchronizing folder hierarchy changes and another that caused deactivated commands in the Office Ribbon to only have the symbol greyed out but not the text in the Dark Gray Office Theme in Excel, Outlook, PowerPoint, and Word.

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Version 2102 (Build 13801.20360) Release date: March 18, 2021

This release resolves a number of problems, including one in Outlook that led users of the Cloud Settings to feature to see custom settings overwritten by default settings after configuring Outlook on a new device, and another in Word that caused Word to stop while typing at the end of a hidden paragraph. 

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Version 2102 (Build 13801.20294) Release date: March 9, 2021

This version of Outlook provides security upgrades as well as resolves a few minor issues. One problem in which newly inserted calendars didn’t display in the navigation pane until Outlook was reopened and another in Word where Narrator skipped over paragraphs were both resolved.

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Version 2102 (Build 13801.20266) Release date: March 1, 2021

A lot of new features are included in this release. Multiple sheets may now be unhidden at once in Excel, and Conditional Formatting dialogues can now be resized. Outlook receives a new Contacts view list. 

During meetings, Teams allows you to communicate “reactions” to others. A channel can also be added to a calendar tab. If their organization’s policy requires it, Excel, PowerPoint, and Word now require users to attach sensitivity labels to documents.

A problem in Excel that prohibited users from exporting an Excel worksheet to PDF has been resolved. After establishing a new calendar group in Outlook, an issue that led users to view multiple calendar groups was resolved.

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Version 2101 (Build 13628.20448) Release date: February 16, 2021

This build addresses numerous problems, including one in Outlook that caused messages to be sent as digitally signed even after the user unchecked that option, and another in Outlook that caused emails to be sent as digitally signed even after the user unchecked that option. It also addresses two issues that affect the whole Office suite, one involving media controller event alerts and the other with media player engine timing.

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Version 2101 (Build 13628.20380) Release date: February 9, 2021

This version provides security upgrades for Excel and addresses various problems with Outlook. One of the Outlook flaws that was repaired was one that caused users of Cloud Settings to suffer a hang while upgrading their settings, and another that caused issues with OWA not showing the right default signature.

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Version 2101 (Build 13628.20274) Release date: January 26, 2021

Among the new features in this version is the ability for government clients to add sensitivity labels to documents and emails in Excel, Outlook, PowerPoint, and Word. It also provides audit data regarding the sensitivity labeling to Microsoft 365 administrators on a regular basis. Additionally, you may now remove conversations in Outlook depending on the message owners.


There are also a number of bug fixes, including one that caused Excel to fail to launch or close unexpectedly if certain Windows Security exploit protection settings were in use, another that caused Outlook to close unexpectedly in certain search scenarios, and a bug in Project that caused task borders to disappear.

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Version 2012 (Build 13530.20440) Release date: January 21, 2021

This version corrects number of issues, including one in Outlook that caused users with extensive hierarchies in their profile to experience hangs, and another that caused Outlook to shut abruptly in certain search circumstances.

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Version 2012 (Build 13530.20376) Release date: January 12, 2021

This release resolves two bugs: one in which some Windows Security exploit protection settings SimExec, CallerCheck caused Excel to fail to start or shut abruptly, and another in Outlook that caused a modified signature to fail to save after urging the user to do so.

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Version 2012 (Build 13530.20316) Release date: January 5, 2020

Change your Outlook settings in the cloud, such as Automatic Replies, Focused Inbox, and Privacy, and have them available on all of your PCs with this release. Presenter Coach is a new tool in PowerPoint that helps you prepare to make more effective presentations. There are also a number of bug patches, including one in Outlook that caused some users’ calendars to freeze when opening, and another in PowerPoint where fonts didn’t appear properly inside equations.

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Version 2011 (Build 13426.20404) Release date: December 21, 2020

This minor update addresses three issues: one in which Excel incorrectly indicated that a new version of a file was available in the message bar, forcing the user to save their changes in a copy of the workbook or discard their changes; another in which Excel disabled macros without prompting when opening an Excel Add-in file containing Excel 4.0 macros; and a third for the entire Office suite, in which Excel left macros disabled without prompting when opening an Excel Add-in file containing Excel 4.0 macros.

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Version 2011 (Build 13426.20332) Release date: December 8, 2020

This update resolves a single issue that caused saveRequestManagerCam to terminate instead of delivering an error throughout the full Office suite. It also includes Excel, Outlook, and PowerPoint security upgrades.

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Version 2011 (Build 13426.20308) Release date: December 2, 2020

This minor update corrects a number of minor issues, including one in Outlook that caused original attendees of some meetings to receive a cancellation notice when another attendee forwarded the meeting, and another in which installing a newer version of Office over an older version of Office resulted in impaired functionality, such as the inability to use Power Query.

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Version 2011 (Build 13426.20294) Release date: November 30, 2020

This update addresses two minor issues: one that created difficulty when copying and pasting an equation from Word to PowerPoint, and another in Word where document styles were being substituted with styles from the template.

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Version 2011 (Build 13426.20274) Release date: November 23, 2020

This version includes a number of small enhancements, such as the ability to paste SVG files from Office into third-party programs and the option to automatically alter Office themes to reflect your Windows 10 theme preferences. There are also a number of bug patches, including one in Outlook that caused the To field to be blank when sending a task progress report, and another in PowerPoint that prevented some damaged PowerPoint files from opening properly even after a document repair procedure.

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Version 2010 (Build 13328.20408) Release date: November 17, 2020

This version addresses a few minor Office problems, including one that damaged Outlook’s MailItem.BeforeAttachmentAdd event and another that affected the whole Office suite and caused Save As to fail in certain circumstances.

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Version 2010 (Build 13328.20356) Release date: November 10, 2020

This version provides security upgrades and resolves two minor issues. It resolves an issue with Outlook in which users were unable to provide Editor privilege to their delegates, as well as a problem with the complete Office suite in which files that had been switched from synced to server-only could not be saved. Excel, Word, and the whole Office suite have also received security upgrades.

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Version 2010 (Build 13328.20292) Release date: October 27, 2020

Several new features are included in this version, including the ability to immediately integrate iPhone photographs into Office applications. Power Query now allows you to construct data types from any power source. Outlook now has the ability to check your grammar as you type. Any message in a channel may be pinned to the channel details window in Teams.

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Version 2009 (Build 13231.20418) Release date: October 21, 2020

This release addresses a few small problems, including one in Outlook that caused it to close abruptly after selecting a search result, and another in PowerPoint where the forms content add-in didn’t render after insertion until the user clicked to another slide.

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Version 2009 (Build 13231.20390) Release date: October 13, 2020

This version includes numerous security improvements as well as a small bug patch. It resolves an issue where Project might crash when opening files with resource contours defined in a certain way. It includes security updates for Access, Excel, Outlook, Word, and the rest of the Microsoft Office suite.

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Version 2009 (Build 13231.20368) Release date: October 8, 2020

This version includes a security patch and resolves a few minor issues. It resolves an issue that led Outlook to start in an offline state unexpectedly, as well as an issue that occurs across the Office suite when printing to an inkjet printer, which indicates “Toner Low” or “No Toner” despite the fact that inkjet printers do not utilize toner. It also corrected a security problem in PowerPoint that caused IRM safeguards to be deactivated when using Protected View on a PowerPoint file.

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Version 2009 (Build 13231.20262) Release date: September 28, 2020

This version adds a few tiny new features and solves a few problems. You may now save shapes as images in Excel and use named variables in new or existing formulae. Outlook now includes a redesigned profile card with an enhanced organization view that matches Outlook’s web card layout.

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Version 2008 (Build 13127.20508) Release date: September 22, 2020

This build fixes number of minor bugs, including one in Excel that prevented users from closing shared calendars by clicking the “X” in the corner after freezing the top row of the sheet when using Quick Analysis, and another in Outlook that prevented users from closing shared calendars by clicking the “X” in the corner.

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