Multi-Desktop PC Apps/Updates install via Admin NOT transferring to Users

Am having problem with application-sharing across multi-desktops on my laptop. Have set-up Administrator as only User for installs & updates to help prevent malicious downloads during online browsing. Switch between users when I need to simply browse the internet. Problem I am having is that application/program updates & downloads that are made on the Administrator desktop are not carrying across the user platforms, allowing me to then USE them in the limited-User web-browsing desk-top. This is not a fully restricted user (I set it up to allow limited admin. control - just restricted downloads.)

Any input would be appreciated. Like COMODO on the whole, but never had problems with installed software not sharing between users, before it.

Are you using the sandbox? When using it try disabling it and reboot. Does that fix it?