You have to make sure that your "$HOME/.wine/drive_c/users/profiles/yourhomefolder/Application
Data/C&C 3/Profiles/your_gameaccount/Options.ini" 'GameSpyIPAddress' fieldagrees with your online ip (for example GameSpyIPAddress = 126.96.36.199) and make sure that file is read-only.
Admin notes: Do NOT submit test results for patched versions of Wine. This is not a true representation of what Wine can achieve.
Do NOT submit test results for PlayOnLinux or anything else that is not Wine.
Do NOT submit test results where Multiplayer has not been tested. Full tests are need to correctly rate an application.
Tests that do not comply will be deleted without warning.
The installer says installation was aborted, even before starting to install files
If you are installing from a CD/DVD, try copying the game disc to your home directory and run it from there.
I chose custom installation and it tells me to select a language pack, even though I have
Use the standard installation mode.
Starting the game
It hangs at the splash screen
Try running winecfg and disable all audio drivers. Of course that is not an acceptable solution, but it will help us to determine where the problem lies.
Some effect settings result in corruption or improperly displayed rendering
Try setting the VFX or Shader quality to a lower setting. Your graphics driver and/or wine may have bugs which result in visual defects at present.
The cursor animation does not play Apply the relevant patches to wine or use a version with the functionality as described in the howto.