Introduction

Microsoft released the following security and nonsecurity updates for Office in May 2021. These updates are intended to help our customers keep their computers up-to-date. We recommend that you install all updates that apply to you.

To download an update, select the corresponding Knowledge Base article in the following list, and then go to the "How to download and install the update" section of the article.

List of office updates released in May 2021

Microsoft Office 2016

Product

Knowledge Base article title and number

Excel 2016

Description of the security update for Excel 2016: May 11, 2021 (KB5001918)

Office 2016

Description of the security update for Office 2016: May 11, 2021 (KB4493197)

Office 2016

Description of the security update for Office 2016: May 11, 2021 (KB5001920)

Office 2016

Description of the security update for Office 2016: May 11, 2021 (KB5001923)

Office 2016

May 4, 2021, update for Office 2016 (KB4462117)

Outlook 2016

May 4, 2021, update for Outlook 2016 (KB5001921)

Skype for Business 2016

May 4, 2021, update for Skype for Business 2016 (KB4493155)

Word 2016

Description of the security update for Word 2016: May 11, 2021 (KB5001919)

Microsoft Office 2013

Product

Knowledge Base article title and number

Excel 2013

Description of the security update for Excel 2013: May 11, 2021 (KB5001936)

Office 2013

Description of the security update for Office 2013: May 11, 2021 (KB4493206)

Office 2013

Description of the security update for Office 2013: May 11, 2021 (KB4464542)

Office 2013

Description of the security update for Office 2013: May 11, 2021 (KB5001925)

Office 2013

Description of the security update for Office 2013: May 11, 2021 (KB5001927)

Word 2013

Description of the security update for Word 2013: May 11, 2021 (KB5001931)

Microsoft SharePoint Server 2019

Product

Knowledge Base article title and number

Office Online Server

Description of the security update for Office Online Server: May 11, 2021 (KB5001914)

SharePoint Server 2019

Description of the security update for SharePoint Server 2019: May 11, 2021 (KB5001916)

SharePoint Server 2019 Language Pack

May 11, 2021, update for SharePoint Server 2019 Language Pack (KB5001915)

Microsoft SharePoint Server 2016

Product

Knowledge Base article title and number

SharePoint Enterprise Server 2016

Description of the security update for SharePoint Enterprise Server 2016: May 11, 2021 (KB5001917)

Microsoft SharePoint Server 2013

Product

Knowledge Base article title and number

Office Web Apps Server 2013

Description of the security update for Office Web Apps Server 2013: May 11, 2021 (KB5001928)

Project Server 2013

May 11, 2021, cumulative update for Project Server 2013 (KB5001930)

SharePoint Enterprise Server 2013

May 11, 2021, cumulative update for SharePoint Enterprise Server 2013 (KB5001933)

SharePoint Enterprise Server 2013

May 11, 2021, update for SharePoint Enterprise Server 2013 (KB5001926)

SharePoint Foundation 2013

Description of the security update for SharePoint Foundation 2013: May 11, 2021 (KB5001935)

SharePoint Foundation 2013

May 11, 2021, cumulative update for SharePoint Foundation 2013 (KB5001929)

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