Check compatibility between your Microsoft Office 2010 files and earlier versions of Microsoft Word 2010, Microsoft Excel 2010 and Microsoft PowerPoint 2010, to check for features that are not supported.
To save your file in an earlier format, see Save an Office file as an earlier version.
Click the File tab.
Click Info.
Under Prepare for Sharing, click Check for Issues.
Select Check Compatibility. Any issues between the 2010 version and earlier versions are listed in the Summary.
Note Selecting the Check compatibility when saving documents check box automatically checks for compatibility issues when you save your file as an earlier version.
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All windows systems have back compatibility with previous versions of file systems.
.xlsx is the file format used in Microsoft Office Excel 2007. It is NOT backwards compatible (i.e. Excel 2003 and earlier versions cannot open it). The file is XML based and smaller in size than the .xls format. It is possible to open, edit, and save a .xls file in Excel 2007 for backward compatibility.
In the Properties dialog box for a file in a shadowed volume, select the Previous Versions tab
For MS Word 2003 & earlier versions: .doc For MS Word 2007 & next versions: .docx.
Microsoft offers a download for opening Office 2007 file formats in earlier versions of the Office Suite. Known as the Microsoft Office Compatibility Pack, this addon is available freely on the Microsoft Download Center.
.xlsx is the file format used in Microsoft Office Excel 2007. It is NOT backwards compatible (i.e. Excel 2003 and earlier versions cannot open it). The file is XML based and smaller in size than the .xls format. It is possible to open, edit, and save a .xls file in Excel 2007 for backward compatibility.
Because this method enables users of earlier word versions to view the file.
Because new version of Photoshop have features not available in previous versions, this does not mean you can not open file from new version in some of previous but mean that features not available in previous versions will be rasterized and flattened. To ensure that anyone can open PSD file in previous version turn on Maximize PSD and PSB File Compatibility when saving file (Edit > Preferences > File Handling).
Yes. DOCM is a Word Microsoft Office Open XML Format document. It is opened by default by Word 2007 upwards. For earlier versions of Word (2003 and below), you'll have to download the Microsoft Office Compatibility Pack for free from Microsoft's website.
The xlsx file extensions are from Excel 2007 whereas xls is used in the earlier versions of Excel.Thanks
If the file is a Word 2007 file (which is still .doc) it won't work on earlier versions of Word (97-2003). This might be your problem.
It opens the file in Compatibility mode. This is done to deal with differences between the versions. Some things from Office 2016 cannot be saved into an older version, so it ensures that this does not happen.