No game runs if MU Online is open.

[Barrão]

Hello, everyone, how you all doing?
So, a while back I came back to MU Online, things were going great, I'd turn on MU Online's BOT and just leave it there and then I'd come to Steam and play. Games would run normally.
But something happened, maybe an update on either Steam, MU Online or Windows, I don't know, and now I can't open any Steam game if MU Online is open. It says "running" on the library but soon after it appears it goes away and the game doesn't open. If a close MU Online games will run normally again so I have to close MU Online, open game on Steam ALT+TAB and then re-open MU Online.
I wonder if any of you both Steam and MU Online players have ever come across with this issue and if you have any tips for me to clear the way for the Steam games while MU Online is still open.
Any help will be appreciated.

Many thanks in advance.
Flávio Coelho.

P.S.: I'm not sure I'm using the right place to post issues like this one so, if I am, I'm sorry.

[GARiTO]

I have the same problem. You can solve this trouble ?