TeamViewer QuickSupport application, which can run without administrator access or any system configuration. It will give them a session ID and password that they can give to you, allowing you to easily remotely connect from your TeamViewer program. There’s no setup process here — just download the appropriate program and double-click it to launch it.
You could also opt to set up unattended access after installing the
full TeamViewer client, giving you permanent remote access to the
computer without the remote user having to give you any passwords or
confirm anything. As long as their computer is on, you’ll be able to
access it remotely. If you want to do preventative maintenance or fix
their computer while they’re not around, this is a convenient option.
TeamViewer is also cross-platform, so you can use it to troubleshoot a
Mac or troubleshoot your parents’ Windows computer from your Linux PC.
You can even remotely connect from an Android or iOS device. We’ve taken
an in-depth look at TeamViewer in the past.