Support for Microsoft Office 2016 and Office 2019 will end on October 14, 2025. After that date, no further updates, security fixes or technical support will be available for these versions of Office.
Take action
You should upgrade devices running Office 2016 or Office 2019 to a supported version as soon as possible. While the old applications may continue functioning, using unsupported software can lead to potential security risks and other issues.
See this KnowledgeBase article for more information: What version of Microsoft Office/Outlook am I using?