Best Practice for Supporting DLLs

I have around 30 PowerBuilder applications that are deployed to users desktops/laptops and some work off of VDI desktops. All these applications need the PB supporting DLLs that we already know.

Current setup is having those DLLs copied over to a folder on the users' local PC (eg: c:\PBDLLbase).

So, everytime we upgrade to a new version of PB and also if suppose we have missed some DLL and now are trying to use that functionality, we have to deploy them to all the users on the network. Also, this creates an issue of mismatch in the DLLs from one user to another.

I wanted to know as to what would be the "best practice" in such an environment. If any of you have something similar, do share it with the group.

Thanks,

Praveen