Can somebody help me to start ARC in Sandboxie?

Hi jonas,

To report a problem with Sandboxie, please follow this guide:
How to report problems with Sandboxie

If the game has an anti-cheat feature, you'll probably need to reach out to their tech support team to see if they are blocking Sandboxie. 
And, keep in mind that most anti-cheat software will not run inside Sandboxie. 

I'll leave this thread open in case other users have tried the game and may be able to assist you. 

Regards,

how can i pypass the anticheat system? 
If you have a licensed version of Sandboxie, can you test "force in Sandboxie" ?

Hi jonas,

Sandboxie was not designed to help customers bypass programs' restrictions.
You may need to reach out to the program's support team to find out what are your options.

Regards,

ok, thx :) 

ok, thx :)