Not really. Depending on what the issue is you can give them logfiles to look at, or you could try a screen sharing session but realistically speaking, in order to effectively troubleshoot they need to access the server.

Thanks @Hans van der Maarel​  for the prompt reply. The functional team needs to use FME Inspector tool to troubleshoot a mapping issue where when some DGN files are converted to shapefiles they're missing the layers appendage. Overall, this is happening to a small fraction of files but it needs to be fixed.