Support via remote control

I plan on trying this service.

Another service that I have found especially useful in supporting commercial software clients online is Copilot. It isn't free, and costs $10 per day if used, but it is head and shoulders above most other solutions because it only requires the distant-end 'helpee' to be able to open an e-mail and click a link."No other installation actions are required, and (if desired), it also self-uninstalls from the client machine when the session is over. It's worked for me on a number of clients' computers, where the client has stated: 'Oh, we can't use any of the remote-control stuff, our network is too secure.' Well, it wasn't as 'secure' as they thought ;-)"

https://www.copilot.com/