Hi, i'm on Win10 v1809 fresh install and Vivaldi latest stable release. I'm experiencing the same error code that is explained in this Post But in my case it's just opening the browser when that error is already jumped, it's quite annoying although apparently it doesn't harm or break navigation features. http://imgbox.com/kQaZnK5G This error code is persistent in every version of sandboxie I've installed. I hope you can fix it. Thank you for your fantastic work in continuing to develop this little gem.