Microsoft has announced an extension of its security update programs for Exchange Server 2016 and 2019, as well as Skype for Business Server 2015 and 2019. This decision comes in response to customer feedback indicating that while many organizations have initiated migrations to newer platforms, some require additional time to complete these transitions.
The extended support will provide an additional six months of Extended Security Updates (ESUs) for these products, covering any Critical or Important-rated security updates that may arise after the official end-of-support date on October 14, 2025. This extension will conclude on April 14, 2026, and Microsoft has explicitly stated that this period will not be extended further.
It's important to note that Microsoft has not guaranteed the release of any security updates during this extended period. Furthermore, these updates will not be available through standard channels such as Windows Update or the Microsoft Download Center. Organizations interested in receiving these ESUs must enroll in the program by contacting their Microsoft account teams to obtain information on costs and the process for purchasing and receiving the updates.
This move underscores Microsoft's recognition of the challenges some organizations face in migrating from legacy systems. However, the company emphasizes that this extension is a one-time offer, urging customers to expedite their migration plans to newer platforms such as Microsoft Teams or Exchange Online to ensure continued support and security.
Source: theregister.com Microsoft extends updates for old Exchange and Skype servers