EN 
繁 Using versions of Office that are no longer supported, or using Office on unsupported operating systems, may cause performance and reliability issues over time.
The following table shows upcoming end of support events that affect Office that you should be aware of.
We recommend that you upgrade older Office clients to Microsoft 365 Apps for enterprise. If that's not possible, we recommend that you upgrade to Office LTSC 2021, which is the most current version of Office available through volume licensing.
Resources：https://vls.yzu.edu.tw/WebHD/Traditional%20Chinese/Microsoft/Office/Office%202021/
For academic staff members who have installation needs, please contact the technical personnel of each department.
For administrative staff members who have installation needs, please contact OLIS Section of Network and Media at extension #3111.
Information：https://learn.microsoft.com/zh-tw/deployoffice/endofsupport/microsoft-365-services-connectivity