Last update: 2022-02-25
Check current version You can check the version of your current Skype for Business Server 2015 environment with the following cmdlet:
Get-CsServerPatchVersion | ft -AutoSize
CU Table In belows table you will find the CU versions for Skype for Business Server 2015, Links to CUs and release dates.
Version Cumulative Update KB Article(s) Alternative Download link 6.0.9319.0 RTM N/A 6.0.9319.55 June 2015 KB3061059 6.0.9319.88 Sept 2015 KB3098601 6.