Office 2021 End of Support: What Ended on October 13, 2026 and What Your Nonprofit Should Do
October 15, 2026
By Josh Bass, Cybersecurity Consultant, CompTIA Security+ Certified. Published 15 October 2026. Last reviewed 15 October 2026. The Office 2021 end of support came on October 13, 2026, with no extension and no extended security updates, according to Microsoft’s end of support notice. Microsoft says the apps may continue to