Support for task pane and content apps in Outlook and PowerPoint via new APIs.
Service Pack 1 is a cumulative roll-up of all security and performance updates released prior to its publication, as well as specific improvements for modern systems.
Enhanced support for Windows 8.1 and Internet Explorer 11. Office 2013 Professional Plus SP1 Feb 2018 Down...
A specific update from January 2, 2018 (KB3172510), improved the thesaurus and general stability across all Office products. Installation & Troubleshooting Description of Microsoft Office 2013 Service Pack 1 (SP1)
Updates from early 2018 addressed vulnerabilities that could allow remote code execution if a user opened a malicious file. Support for task pane and content apps in
By February 2018, Office 2013 was in its phase. Updates during this period focused almost exclusively on security vulnerabilities and critical bug fixes.
Improved performance on high-DPI devices and precision touchpads. A specific update from January 2, 2018 (KB3172510),
, specifically including updates through February 2018, represents a critical stability baseline for this version of the suite. Summary of Service Pack 1 (KB2817430)