I have a DLL add-in for Excel that adds an API for another program I have. Add-in had an installer package and after install I can't find it in the Excel add-ins list. I have a suspicion that it is a 32-bit addin that may be causing the problem. Is there a way to check if the DLL is 32-bit? Even if it is 32-bit should it cause a problem to run on 64-bit Excel? Help!
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1Unless you are 100% sure the add-on is able to support a 64-bit installation of Excel 2010 I would just remove the add-on in question. The alternative is to remove the 64-bit version of Excel 2010 and install the 32-bit version instead.– RamhoundAug 31, 2012 at 16:43
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Does this add-in purport to work with Excel 2010 at all?– Ƭᴇcʜιᴇ007Aug 31, 2012 at 16:57
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Yea i know it works for other people, though I've only asked one person what bit version and they were using 32– riotburnAug 31, 2012 at 17:46
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1 Answer
Is there a way to check if the DLL is 32-bit?
You can refer to the question, How can I find out if a given program is 64 or 32 bit version?, for that. That will work for DLLs and libraries, too.
Even if it is 32-bit should it cause a problem to run on 64-bit Excel?
Yes. 32-bit programs cannot load a 64-bit library, and vise-versa. So if you have a 32-bit Add In that you need to use, then you need to install the 32-bit Excel.
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1@riotburn - Follow the directions....The answer for the linked question explains how to use the tool. Just do
file myfile.dllinstead offile myfile.exejust common sense.– RamhoundAug 31, 2012 at 17:32 -
doesn't work just get 'file' is not recognized as an internal or external command. This is after cd to the directory containing the dll and then typing file my.dll– riotburnAug 31, 2012 at 17:48
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If the addin was explicitly compiled for use on 32-bit systems then your out of luck. Typically 32-bit software is fine running on 64-bit, but only if it was compiled as such. Aug 31, 2012 at 17:59