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Editorial Team
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Asked: 2026-05-23T21:33:45+00:00

I have a dll that I distribute that will not run on some windows

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I have a dll that I distribute that will not run on some windows OS. Using dependancy walker I discover msvcp90d.dll missing on these systems. I DO NOT want any run time dependancies that require the C++ redistributable, and since the application that calls the DLL is not written in C++, it does not have any dependancy on the C++ redistributable.

I am guessing the I left the DEBUG option in the linker preferences on when I compiled the dll which is why it needs msvcp90d.dll?

ADDED:
Appologies, I pasted the wrong dll name in my original question…. too many hours in front of the monitor…

THe dll is a third party dll that I did not write compiled by me in VS2008.

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1 Answer

  1. Editorial Team

    MSVCP90 is nothing to do with debug (that’d be msvcp90d). You can remove your dependency by switching the compiler to /MT (instead of /MD). You also need to ensure that every static library you link to was also compiled /MT.

    I recommend against building apps /MT because it has a significant negative effect on system performance and makes servicing take longer in the event of a security issue with the CRT.

    Finally, note that /MT means that your CRT is private. So you must ensure that CRT/STL types don’t pass across your DLL boundary.

    Martyn

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