when i plug my s4 into my desktop it does not open verizon software to view the drives. how do i get my desktop to be able to copy photos from my phone?
Sounds like you might need the USB drivers from Samsung for your PC.
Download Center: Download Software, Firmware, Drivers & Manuals | Samsung
The Verizon Update Assistant has no bearing on how your phone drive is read by the PC. UA is only for updating the p[hone via Verizon servers.
With the correct drivers installed, you should see the phone being read as a drive by the PC shortly after the Verizon UA is read then closed.