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)
Enhanced support for Windows 8.1 and Internet Explorer 11. Office 2013 Professional Plus SP1 Feb 2018 Down...
By February 2018, Office 2013 was in its phase. Updates during this period focused almost exclusively on security vulnerabilities and critical bug fixes. A specific update from January 2, 2018 (KB3172510),
Updates from early 2018 addressed vulnerabilities that could allow remote code execution if a user opened a malicious file. A specific update from January 2
Word, Excel, PowerPoint, Outlook, OneNote, Access, Publisher, InfoPath, and Lync. February 2018 Updates Context
, specifically including updates through February 2018, represents a critical stability baseline for this version of the suite. Summary of Service Pack 1 (KB2817430)