Upgrading Lync to Skype for Business

Question

I am attempting to update Lync 2013 (15.0.4420.1017) to Skype for Business.

I have downloaded and installed the following updates as described here:

• lpksp2013-kb2817427-fullfile-x86-en-us.exe
• lynchelploc2013-kb2889853-fullfile-x86-glb.exe
• lync2013-kb3054946-fullfile-x86-glb.exe
• mso2013-kb3054853-fullfile-x86-glb.exe
• lyncmso2013-kb2889923-fullfile-x86-glb.exe

The updates run successfully, but Lync isn't updating.

What can I do next?

Answer 1

The following update was also required: proplussp2013-kb2817430-fullfile-x86-en-us.exe

Found here.