Support for Windows 10 ended on October 14, 2023, impacting older versions of Office (2019 and 2016) and Exchange Server (2019). Microsoft offers Extended Security Updates (ESU) for Windows 10 for an additional year, but Office users must choose between transitioning to Office 2024 LTSC or subscribing to Microsoft 365. Office 2024 LTSC will not receive continuous feature updates and will be supported until 2029. Support for Exchange 2016, Exchange 2019, Skype for Business 2016, and Skype for Business 2019 also ended on October 14. Windows 11 22H2 for Enterprises and Education is no longer receiving updates, and users are encouraged to upgrade to a more recent version. The changes may pose significant challenges for organizations, particularly those focused on the end of Windows 10 support.