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Asked: 2026-05-15T19:00:45+00:00

I have a project A linked to a project B. B is compiled into

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I have a project A linked to a project B. B is compiled into a .dll while A is the main program and compiled into a .exe

The compiling of the projects is done without any issues, but when I run the program, I get a pop-up window saying “This application has failed to start because B.dll was not found. Re-installing the application may solve the problem.”

I have done several cleanings, tried to move the dll, but that won’t work.

I am using visual Studio 9.0 btw

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1 Answer

  1. Editorial Team

    When Windows loads an EXE, it will check what DLL’s are needed, directly or indirectly. In your case, A.EXE will need B.dll. When Windows has determined that list, it will use this procedure to locate the DLLs:

    • The directory where the executable is stored [1]
    • The current directory, as set by CreateProcess()
    • The Windows system directory (holds most of the Windows DLLs such as USER32.DLL)
    • The Windows directory (for legacy reasons, mostly)
    • The directories from the PATH variable (also for legacy reasons)

    [1] Symbolic links can cause an executable to have multiple paths. To be precise here, it’s the path of the executable that was passed to CreateProcess.

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