The old recipe for SSMS 17.x was a nice success for me with about 1000 hits. Especially the comments were enlightening. The licensing problem could be solved with a simple registration key. With 18.5 there is nothing more to do here.

App-V 5 Recipe for SQL Server Management Studio 2016 or SSMS 17.x

The legal stuff first: Use these instructions at your own risk. I cannot guarantee that they will always function well and I accept no responsibility for any damages. However I would appreciate any feedback concerning problems in order to help others in the community.

You can find here the Recipe for 18.5: https://www.andreasnick.com/105-sql-server-management-studio-18-5-ssms-app-v-recipe.html

Notice: If you would like to support me and this blog, then purchase my App-V 5 book (written in German): https://www.amazon.de/Softwarevirtualisierung-mit-App-V-Ein-Praxisbuch/dp/1544717318

A few days ago I held a workshop on packaging for App-V together with one of our best Citrix specialists and coauthor of the Rheinwerk book for XenDesktop 7.x, Jan Hendrik, (Jan Hendrik's Blog excelent Citrix Blog) as well as with his colleague Tobias. Especially we talked about applications for which packaging had not functioned. This included, among others, the SQL Server Management Studio 2016 and SSMS 17. Even with the App-V recipe for SSMS 2014 it still did not allow packages to be made.
Upon attempting to sequence SQL Server Management Studio 17 and to save it, the following error occurs: HRESULT: 0x8007139F. Apparently the App-V 5 sequencer does not function with some of the components in the package (@Microsoft – this is a bug in the sequencer). Furthermore it is no longer possible to download Visual Studio Shell 2015 (Isolated) separately from Microsoft. In the Rorymon blog there is only a notice that Microsoft does not (any longer?) support Management Studio (SSMS 17) for App-V. I think that the lack of manufacturer's product support is the case for many applications. Therefore we simply tried it ourselves (it does represent quite a challenge).
When one takes a closer look at the problem with the Process monitor, one quickly sees which component it is that causes the HRESULT: