FileNotFoundException (DLL not found)

Question

I'm getting that strange error on one of client's machines. It throws FileNotFoundException, but that DLL is definitely right there in the folder with Executable.. Why it can't find it? Please advise..

score 7 · Accepted Answer · answered Nov 22 '11 at 08:55

7

Psychic debugging, since you have not included the full exception details, is that you have a 32bit versus 64bit mismatch:

Your Executable is AnyCPU
The referenced DLL (or a downstream reference) is x86
The machine running the executable is 64bits

Basically, you'll have to recompile your C# executable with a Platform of x86 if you have any x86 DLL dependency (usually an unmanaged DLL).

answered Nov 22 '11 at 08:55

user7116

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brilliant suggestion! Thank you so much! – Jeffrey Rasmussen Nov 22 '11 at 10:26

score 2 · Answer 2 · answered Nov 22 '11 at 08:55

2

The assembly may be missing one of its dependent assemblies.

answered Nov 22 '11 at 08:55

mgronber

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+1 especially if it is compiled with a dynamic link to the C RTL. – user7116 Nov 22 '11 at 08:58
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Yes, seems like that. How to check for additional dependencies of that DLL I referenced to? – Jeffrey Rasmussen Nov 22 '11 at 09:06

FileNotFoundException (DLL not found)

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