http://bugs.winehq.org/show_bug.cgi?id=59173 --- Comment #3 from Austin English <austinenglish@gmail.com> --- Are you using the Ubuntu wine packages or the WineHQ packages (https://gitlab.winehq.org/wine/wine/-/wikis/Debian-Ubuntu). The Ubuntu packaged wine is actually from Debian, which disables the mono/gecko addons (because they haven't been recompiled from source by Debian). See https://askubuntu.com/questions/841847/mono-package-for-wine-is-not-installe... You have a few options: * manually install the wine-mono .msi as the above link explains * switch to the WineHQ packages, which should prompt to install mono for you * build wine from source, which should also prompt to install mono for you * use winetricks to install the native .NET version your program needs Note: mono-complete is a separate thing (confusing, I know). -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.