Over the last several weeks we have received several questions about possible extension of the Skype for Business Server 2015/2019 ESU program past October 2026. After all, in our original Skype for Business 2015 / 2019 Extended Security Update program announcement we said that there would be no extensions, but then we ended up creating a “Period 2” Skype for Business ESU program, that is scheduled to conclude at the end of October 2026. We are just about at the mid-point of Period 2 Exchange ESU now.
There will be no further extension of Skype for Business 2015/2019 ESU program timeline. Once October 2026 ends, there will be no further updates for Skype for Business 2015/2019, even if you currently have the Period 2 ESU.
If your organization still uses Skype for Business 2015 or 2019 in production:
- See Why “in-place upgrade” from Skype for Business Server 2019 to Subscription Edition (SE) is low risk | Microsoft Community Hub – which explains why in-place upgrade from Skype for Business 2019 CU8 to Skype for Business SE RTM is not a significant technological change and is low risk.
- See Support for Skype for Business Server 2015 and Skype for Business Server 2019 ends today | Microsoft Community Hub – if you are still running Skype for Business 2015.
The Skype for Business Server Team
Microsoft