I do not quit for those who are polite and cooperative. _ Windows MVP 2010-20 Millions helped via my tutorials and personally in forums for 12 years.
Thoroughly research any product advertised on the sites before you decide to download and install it. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). The pages appear to be providing accurate, safe information. Standard Disclaimer: There are links to non-Microsoft websites. If you'll wait to rate whether my post resolved your problem, I will keep working with you until it's resolved. Feel free to ask back any questions and keep me posted.
Read these articles to know for sure if you're ever hacked and how to prevent it: The Viewer you described is the normal behavior of a VPN. He can't do things you can't see yourself on the screen you're sharing. You should have seen him browsing in your PC by activity on your desktop. You said you were playing a game with him. Also at the top of that page set Sort by: to Date and uninstall anything else that was installed on that date. This assessment covers both the client download, RADMIN Viewer and the server. Go into Settings > Apps > Apps & Features to uninstall the Radmin VPN. RADMINs benefits are high speed, strong security, and solid reliability.
I'm Greg, awarded MVP for eleven years, Volunteer Moderator, and Independent Advisor here to help you until this is resolved. im currently shaking in fear incase my friend has remote controlled my pc i just met him like a week ago please help! but i just looked at my documents and seen "default.rdp" i searched it up and apparently it means someone has attempted to remote control my pc and gain access. soon as i read that i was pretty scared about it but i didnt take any notice and me and my friend kept playing, so we both went off and i left his network and turned my radmin all off. we kept playing and we was fine there was no problems we was both fine until i clicked my windows key and seen (Radmin viewer) that comes with Radmin vpn which i didnt know and i searched it up about radmin viewer and it said radmin viewer is a remote control desktop software that looks like your sitting infront of the actual pc. So i downloaded a software called radmin vpn to play with a friend on a game, so i downloaded Radmin vpn and then i connected to my friends server which was just me and him in the server, then he gave me his radmin ip and then obviously i connect through the game etc.