The latest updates for Skype for Business Server 2019 and how to update each server role is described here:
Updates for Skype for Business Server 2019
Download the latest Cumulative Update for Skype for Business Server 2019
Here is the Cumulative Updates List for Skype for Business Server 2019.
| Version | Cumulative Update | KB Article |
|---|---|---|
| 7.0.2046.409 | October 2022 (CU6 HF3) | KB5017871 |
| 7.0.2046.404 | July 2022 (CU6 HF2) | KB5016714 |
| 7.0.2046.396 | April 2022 (CU6 HF1) | KB5012686 |
| 7.0.2046.385 | December 2021 (CU6) | KB5006323 |
| 7.0.2046.369 | May 2021 (SU) | KB5003729 |
| 7.0.2046.252 | February 2021 (SU) | KB5000675 |
| 7.0.2046.248 | November 2020 (CU4 HF1) | KB4593479 |
| 7.0.2046.244 | September 2020 (CU4) | KB4582622 |
| 7.0.2046.236 | July 2020 (CU3 HF1) | KB4564309 |
| 7.0.2046.216 | March 2020 (CU3) | KB4540585 |
| 7.0.2046.151 | December 2019 (CU2) | KB4528667 |
| 7.0.2046.143 | September 2019 (CU1 HF1) | KB4470124 |
| 7.0.2046.123 | July 2019 (CU1) | KB4499991 |
| 7.0.2046.116 | June 2019 (HF1) (*) | KB4507638 |
| 7.0.2046.0 | RTM | NA |
* Only the Front End Server was update on this release.
Note: This list will include the version for the Core Components. This is because not all components are updated when we apply a Cumulative Update.
We can use the same PowerShell cmdlets to check the component version:
Skype for Business Server 2015 Component Version using PowerShell
Skype for Business Server Component Version using Get-CsServerPatchVersion
The previous lists for OCS/Lync/Skype for Business Server can be found in the following links:
OCS 2007 R2 Cumulative Update List
Lync Server 2010 Cumulative Update List
UC Lobby 
Hi David,
KB4507638 url in the table is incorrect.
Fixed! Thanks.
Doesn’t look like Core Components do get updated: https://twitter.com/tobiefysh/status/1137036227503370240
Yes, only the Front End Server was updated on this one.
I am adding a note, thanks 🙂
Any way to get CU 7 downloadable link which would update the version to .534 ?
All the links mentioned for CU7, 8, 9, 10 are the same and would update Skype servers to version .559!
Luca Vitali has an archive for previous Cumulative Updates:
https://lucavitali.wordpress.com/cu-store/