How to make Win32::OLE work on 64bit MS OFFICE installation

I have two PCs, one has MS Office 2013 32bit installed and another MS Office 64bit installed. I have Perl code that is using Win32::OLE Perl module to manipulate XLS spreadsheets. The code is working perfectly fine on 32bit PC, but has a problem on 64bit one.

After doing some research here is what I found out. The problem is the following line of code:

use Win32::OLE::Const 'Microsoft Excel .* Object Library';

I looked inside Win32::OLE::Const module and it seems that the module is looking for that library in the registry. When I printed out all entries from the registry from both 32 and 64 bit I found out that this library is available on 32bit and not available on 64bit.

Is there a way to install that library on 64 bit? If not, are there any other modules that would allow OLE automation of Excel?

All my Perl script needs to do is to open XLS file and save it as CSV. I am doing it with Spreadsheet::ParseExcel and Spreadsheet::XLSX in all other scripts. The problem with this particular XLS file is that it is password protected and using non-standard password encryption. So Spreadsheet::ParseExcel is not able to open it. Win32::OLE has no issues opening the file on 32bit.

Code can be provided if needed.

Please advise.

Thank you, -Andrey


I use your Win32::OLE::Const module to have the Excel constants available in Perl.

Recently, I had a clean Win7 x64 install with Office 2016 and the script was not working anymore (using the latest version Win32::OLE::Const module which is installed with the current (on 06/04/2016) ActiverPerl 64 bit installation).

After some investigation, I have found out that the Win32::OLE::Const did not see the Excel automation object although it was well registered and available in the registration database.

In the registration database the following key contains the path to the Excel executable:


If I add manually a new key


with the same path as for the Win64 key then the Perl script found the Excel typelib and worked again.

Hope this helps.

Registry key also helps with Outlook 2013.


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