For Windows Store/Game Pass users, deleting the Microsoft Store local cache in the AppData/Local/Packages folder can resolve persistent directory errors.
Inconsistent administrator or optimization settings are a frequent culprit. in your installation folder, right-click it, and select Properties Compatibility mw3 cannot run with the addon in the directory
If you are playing on an NVIDIA graphics card and have recently updated your drivers, this is almost certainly the cause of your problem. For Windows Store/Game Pass users, deleting the Microsoft
Ensure the server is launched from the same directory where the executable resides. If the command prompt is looking elsewhere, it may default to looking for addons in System32 , causing an error. For Windows Store/Game Pass users