I know many of us have a need to support our clients remotely, and we use software for this purpose.
For the past few years I have used Team Viewer and it generally has worked out well but sometimes it confuses my clients, and keeping an active license can be expensive.
Prior to that I used LogMeIn happily until they discontinued support of Windows XP, and my clients refused to upgrade their OS.
Recently I discovered a new software called SPLASHTOP. ( www.splashtop.com ). It seems very simple to use ( for my clients ), connects quickly, and is less expensive. I'm now linking to that from my applications ( a menu option I call Tech Connect ). When my client clicks on that option it takes him to a site and downloads a small app, then provides him with a 9 digit number. He provides me with that number and I can enter it on my side and connect immediately.
I've found it actually uploads files to their machine quickly, supports dual monitors, and a lot more.
For those of you seeking such a solution, it's another one to explore. I have found that remote access through this type of program makes my clients extremely happy with the support I can provide, and they continue to stick with me over the years.