Configuring Default File Types In Microsoft Office 2010

Martin Brinkmann
Jul 8, 2010
Updated • Jul 8, 2010
Software, Windows

Microsoft has added support for ODF 1.1 in Microsoft Excel 2010, Microsoft Word 2010 and Microsoft PowerPoint 2010. The Open Documents Format is available as an alternative file format in Microsoft Office 2010.

Office 2010 displays a "Welcome to Microsoft Office 2010 screen" on the first start of PowerPoint, Excel or Word in which the user is aksed to select a default file type.

Available for selection are Office Open XML formats, the standard Microsoft Office formats, or OpenDocument formats. Selecting Microsoft's own format ensures full compatibility with all Office 2010 features while some contents or editability may be lost if the ODF format is selected instead.

Selecting a default file type simply means that Microsoft will save the documents in that format. It is still possible to select a different format in the Save As dialog whenever it is needed.

default file types
default file types

Microsoft has created a table for Excel, Word and PowerPoint that outlines the level of support for the ODF format.

Available support levels are supported, meaning that the ODF format supports the feature, partially supported, meaning that formatting or usability might be affected but text or data is not lost, and not supported meaning that saving the document in the ODF format could lead to losing content, formattting and usability.

The selection of a default document format could affect, to a certain extent, the manner in which you can use Microsoft Office and the way you exchange documents with users of other productivity applications. Document formats were initially developed to reflect the features and behavior of one or more applications (the features and behavior of productivity applications can be quite different). For example, OpenDocument Format (ODF) was originally developed to reflect the features and behavior of OpenOffice-based productivity suites and

OpenXML was originally developed to reflect the features and behavior of Microsoft Office. Microsoft Office now provides support for ODF and gives Microsoft Office users the opportunity to save their documents in ODF. However, because Microsoft Office and OpenOffice features are not exactly the same or are not implemented the same way, Microsoft Office users who use the features that are not fully Supported (see below for a list of links for these features) in ODF may experience changes in the editability of the document and sometimes see a loss of content when saving their document in ODF.

  • What happens when I save a Excel 2010 presentation in the OpenDocument Spreadsheet format? [link]
  • Differences between the OpenDocument Presentation (.odp) format and the PowerPoint (.pptx) format [link]
  • Differences between the OpenDocument Text (.odt) format and the Word (.docx) format [link]

Office 2010 users need to make a choice when the screen appears before they can start working with the software. It is possible to change the default file format at a later time. This is done the following ways:

Here are the steps for Excel 2010.

  • Click the File tab.
  • Under Help, click Options.
  • Click Save, and then under Save workbooks, in the Save files in this format list, click the file format that you want to use by default.

Here are the steps for PowerPoint 2010.

  • Click the File tab.
  • Under Help, click Options.
  • Click Save, and then under Save presentations, in the Save files in this format list, click the file format that you want to use by default.

Here are the steps for Word 2010.

  • Click the File tab.
  • Under Help, click Options.
  • Click Save, and then under Save documents, in the Save files in this format list, click the file format that you want to use by default.

Tutorials & Tips

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  1. Anonymous said on March 9, 2023 at 1:52 pm

    Does it come back after every “moment” update?

  2. Baloney said on March 9, 2023 at 2:23 pm

    Yeah right.. Like this is going to stop defender from running =) This is comedy gold right here.

  3. Anonymous said on March 9, 2023 at 3:25 pm

    no ‘about the author’ paragraph?

  4. Gregory said on March 9, 2023 at 4:19 pm

    For permanent disable defender is if removed complete from system no just change permission folder.

    Just this is joke.

  5. moi said on March 9, 2023 at 5:57 pm

    simpler, load Autoruns (SysInternals)
    – filter “Defender”
    – untag all entries
    – reboot
    nothing has changed since my 1st modification years ago

  6. John G. said on March 9, 2023 at 6:32 pm

    I wouldn’t disable Defender imho, it has too many hidden roots inside Windows itself. One time I tried to uninstall it using brute force scripts and then the Onedrive feature stopped working definitely. A reinstallation was needed and since those times I prefer to maintain Defender untouched. It’s a better method to install another antivirus and it will disable Defender in a safer and easier mode (e.g., Avast is the best in this way, and also Panda Cloud Free is good too).

    1. Tweakmaster said on September 29, 2023 at 9:57 am

      U are just * [Editor: removed] thats the problem ;p first of all u shall always debloat windows u shall have max 65 services with your drivers for pc and windows own servs. You didnt know what that script did

  7. boris said on March 10, 2023 at 12:19 am

    You can not stop defender from running in background or remove it without some penalty. All you can do is to limit telemetry.

    1. TelV said on March 10, 2023 at 4:52 pm


      It’s probably Smartscreen which is preventing WD from being disabled. Get rid of that and the problem should be solved:

  8. hoho said on March 10, 2023 at 1:47 pm

    Remove Windows and go for Linux.

    1. basingstoke said on March 10, 2023 at 2:51 pm

      Linux sucks dude. Besides it’s not comparable to Windows, these OSes are in different classes entirely.

      1. Derp said on March 10, 2023 at 4:36 pm

        I use Linux as my daily driver. It’s far more stable than Windows. When’s the last time you used Linux, 2010?

      2. Bromosexual said on March 11, 2023 at 2:04 am


        You’re right, dude. Bro, linux is just a bunch of code that starts before the OS, dude. Brobrodude, that shit ain’t even got emojis, dudebrodudeman! Dudebro, it’s no way near as cool as Windows with its hardcoded abilities to make money off the user, bro. Yo brodude man, you’re the coolest dude ever man, bro. Dude.

      3. basingstoke said on August 16, 2023 at 7:20 pm

        Lol what? Windows 7 doesn’t come with any Emojis

  9. TelV said on March 10, 2023 at 4:46 pm

    Download Autoruns and remove the checkmark from Windows Defender. It doesn’t remove it, but it will never run.

  10. Simon said on March 10, 2023 at 8:37 pm

    Just use “Defender Control”:

    Per this video,
    it also works on Windows 11 too…

  11. Someone said on March 10, 2023 at 9:26 pm

    Win Defender, is completly the most succesful free-built in antivirus of Microsoft. Really nice product. Saved my ass a lot of times. Has updated malware database, completly strong defence
    from whatever smart screen disables. Or if you want better and more upgrated (paid) program,
    you can go further. But defender is always on your side.

  12. CalixtoWVR1 said on March 10, 2023 at 10:03 pm

    Why would one disable Windows (or Microsoft) Defender in the first place?. I consider this to be playing with fire big time. Everybody knows that if one is using another A-V, Defender will be disabled on its own and won’t be in one’s way.

  13. Ed D said on March 10, 2023 at 11:09 pm

    Why would I want to disable Windows Defender in the first place? It’s a great anti virus in my opinion. Been using it since Windows 8 and and never had a problem or a virus. Why mess with a good thing, if it ain’t broke don’t fix it.

  14. owl said on August 17, 2023 at 1:57 am

    How a ridiculous article!
    I am thoroughly stunned.

    Why Should You Disable First-Party Windows Defender?
    I can only think that it is “malice or perversely intention (want you to buy a third-party AV where you can expect a back margin)” to guide invalidation without showing the premise.
    No sane company will use third-party closed source programs (such as AV).

    As I thought, “Ghacks Technology News” seems to be coming to downfall.

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