Windows End of Support Calendar
The below End of Support Calendar shows all Microsoft Operating Systems end of support dates, whether they are the end of mainstream support that updates features and cosmetic changes or extended support, which ends security fixes and all Microsoft technical support other than old web pages.
End of extended support refers to the date when Microsoft no longer provides automatic fixes, updates, or online technical assistance. Without Microsoft support, you will no longer receive security updates that can help protect your PC from harmful viruses, spyware, and other malicious software that can steal your personal information.
Includes all programs within this version of Microsoft Office, but the security problems apply in particular to software that receives information from the Internet: Outlook, OneNote.
Mainstream support for this version of Office ended October 13th, 2020.
End of extended support refers to the date when Microsoft no longer provides automatic fixes, updates, or online technical assistance.
For Office 365 subscribers, Office can be used on Windows 7 until January 2020, with the exception of OneNote 2016, which be supported to October 2020 for mainstream support and October 2025 for extended support.