Compatibility Pack for pre-2007 Office not working in Win10 for xlsx  

  1. Posts : 231
    Windows 10

    Compatibility Pack for pre-2007 Office not working in Win10 for xlsx

    Being cheap and "if it ain' t broke, don't fix it" I'm using my Office 2000 on my Windows 10 machine. Just as I've been using it for almost 20 years, in multiple operating systems.

    When Office 2007 came out, and the docx and xlsx formats, Windows provided a "Compatibility Pack" to allow older versions of the Office software to open the new file formats.

    I downloaded that onto the Windows 10 machine, ran it, and it works fine for docx files - Word 2000 can open, read, edit, save them.

    But not so for xlsx files with Excel 2000.

    A lot of these compatibility packs, maybe all, are gone from the web. I transferred to my Win10 machine from my Win7 machine the FileConverters.exe (version 12.0.6514.5001) that worked great in Windows 7 and ran it. But still, no fix. And I can, using that same version, use Excel 2000 on xlsx files in Windows 7.

    Is there some Windows 10 trick I need to do, to enable Excel 2000 to work for me, as it does in Windows 7?
      My Computer

  2. Posts : 15,954
    Windows 10 Home x64 Version 22H2 Build 19045.3448

    The compatibility pack for Office 2000 is still available from MS
    Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats

      My Computer

  3. Posts : 13,170
    Win10 Version 21H2 Pro and Home, Win11 Pro and Home

    I just installed the FileFormatConverters.exe on my Win10 running Office 2000 and see serious issues with Microsoft Excel and .xlsx files from 3 and 4 years ago. The same files open okay in LibreOffice Calc.
      My Computers

  4. Posts : 11,246
    Windows / Linux : Arch Linux

    Hi folks

    open in WPS Office (Free) and then save as .xls if you still want to use pre-office 2007 stuff.

    It's much more compatible than Libre Office too.

    WPS Office Perfect Compatible With Microsoft (MS) (Word, Excel, PowerPoint) For PC and Mobile - Free Download

      My Computer

  5. Posts : 231
    Windows 10
    Thread Starter

    Okay, progress, sort of, but not there yet.

    Running filetypeconverters.exe creates a "moc.exe" file in the "Office 12" folder.

    Associating the moc.exe program to open up .xlsx files is supposed to do the trick. See How to fix How-tos

    In Windows 7 and prior Windows versions, this works fine. The .xlsx file opens in Excel 2000, after the XML converter does its magic.

    However, in Windows 10, the moc.exe seemingly can only convert the file to .xls format and save it somewhere.

    So instead of double-clicking and opening, one has to double-click, designate where to save the file as a .xls file, then find that file and manually open it.

    Not sure why in Win10 these extra manual steps are necessary, when in prior versions, the flow was seamless.
      My Computer


  Related Discussions
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 00:24.
Find Us

Windows 10 Forums