Installation Failed

The installer log file exists at `%temp%\MD11InstallManager.log` and can reveal quite a bit.


Long Paths

There have been instances where the MD-11 installer fails due to a 'Maximum Path Length Limitation'. This occurs when your MSFS/FS24 installation folder exceeds the maximum character limit for Windows. To resolve this, you will need to enable the option for 'Long Paths' 

This is done via this process: Maximum Path Length Limitation - Win32 apps | Microsoft Learn 


Download Issues

Connectivity, bandwidth, and available disk space can affect this. If the issue is the "connection forcibly closed by the remote host" error in the log, it's usually a network issue between your computer and us. Try checking antivirus software, router settings, or even a different network if possible. In some cases, the issue can be IPv6 - if possible, try disabling IPv6 on the network adapter and seeing what effect it has.


Plane Installs but Does Not Appear

The easiest way to determine what's going wrong is check the `%localappdata%\TFDi Design MD-11\installation.xml` file and see what it thinks the MSFS/FS24 path is. This will often tell you where the files are (but not why they're misplaced). The next step is determing where they should be and correcting it - either by moving the files yourself and editing their installation.xml or reinstalling with the path override (see below).


Incorrect/Duplicate/Broken Sim Installations

This occurs when the sim is improperly installed or has switched from MS Store to Steam or vice-versa. To determine what the appropriate path, you need to look for the "InstalledPackagesPath" value in the UserOpt.cfg file.

Flight Simulator 2020

  • Store: `%localappdata%\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache\UserCfg.opt`
  • Steam: `%appdata%\Microsoft Flight Simulator\UserCfg.opt`


Flight Simulator 2024

  • Store: `%localappdata%\Packages\Microsoft.Limitless_8wekyb3d8bbwe\LocalCache\UserCfg.opt`
  • Steam: `%appdata%\Microsoft Flight Simulator 2024\UserCfg.opt`

Once you know the correct path, you can use this system to help the installer find it: https://support.tfdidesign.com/support/solutions/articles/62000232008-the-md-11-is-not-detecting-msfs


If you are still experiencing problems with your installation please let us know!