Of Ecma-376 essentially ties the adopter to Microsoft Office. The ISO/IEC 29500 “Strict” version. This is the version that ISO said should be used for new documents. But neither Office 2007 nor Office 2010 are capable of writing OOXML “Strict.” Microsoft has made no public commitment on when they will fully implement OOXML “Strict.”. The Office File Converter Pack supersedes all previously released versions of the Office Converter Pack. This version is the first release on CNET Download.com. Best VPN Services for 2020. To resolve this issue go to the Microsoft Download Center to download and install the OOXML Strict Converter for Office 2010. You can read, but not save Strict files in Office 2010. Useful Resources. Excel workbook corruption detection, repair and recovery. For Excel 2010, Word 2010 or PowerPoint 2010. Go to the Microsoft Download Center to download and install the OOXML Strict Converter for Office 2010. Open the file in Excel 2010, Word 2010 or PowerPoint 2010. Click Open when the following message appears. Convert Open XML files that were created in Office 2008 for Mac or Office 2007 for Windows.How To Tell If Your Workbook Is A Strict SpreadsheetWhen you try to open a XLSX workbook in Excel 2007, you might receive the dreaded message:file format is not valid! Is your file really corrupted? Perhaps not!Here is what you can do to troubleshoot your workbook:
*Open the file in Excel 2013 or later. If the file opens normally, then it is a Strict Spreadsheet. Verify that the file format is Strict by looking at the Save As dialog.
*If you do not have a version of Excel other than 2007, rename your file to ZIP and open the app.xml file part in a viewer. The two tell-tale signs are: The namespace declaration for the Strict XLSX variant is http://purl.oclc.org. In addition, the workbook should have been created in Excel 2013 or later. Look at the <AppVersion> attribute. Strict XSLX workbooks cannot be saved in Excel 2010 or earlier versions.Strict ISO 29500 Spreadsheets Opened in Excel 2010When you try to open a Microsoft Office Strict Open XML workbook (.xlsx) in Excel 2010, a document (.docx) in Word 2010, or a presentation (.pptx) in PowerPoint 2010, you may receive the following error message and you may not be able to open the file:This file was created by a newer version of Microsoft Excel and a converter is needed to open it. Do you want to download the converter from the Microsoft Office Web site?To resolve this issue go to the Microsoft Download Center to download and install the OOXML Strict Converter for Office 2010. You can read, but not save Strict files in Office 2010.Useful Resources
*Office Password Eraser: How to remove strong passwords from Strict Spreadsheets
*XlFileFormat Enumeration (Excel) for Office 2013 and later: xlOpenXMLStrictWorkbook(61)Please enable JavaScript to view the comments powered by Disqus.comments powered by Disqus-->
Applies to:Microsoft 365 Apps for enterprise, Office 2019, and Office 2016
Supported file formats and their extensions are listed in the following tables for Word, Excel, and PowerPoint.File formats that are supported in Word
The following table describes the file formats that are supported in Word, alphabetized by extension.ExtensionName of file formatDescription.doc Word 97-2003 Document The binary file format for Word 97-Word 2003. .docm Word Macro-Enabled Document The XML-based and macro-enabled file format for Word 2019, Word 2016, Word 2013, Word 2010, and Office Word 2007. Stores Visual Basic for Applications (VBA) macro code. .docx Word Document The default XML-based file format for Word 2019, Word 2016, Word 2013, Word 2010, and Office Word 2007. .docx Strict Open XML Document Conforms to the Strict profile of the Open XML standard (ISO/IEC 29500). This profile of Open XML doesn't allow a set of features that are designed specifically for backward-compatibility with existing binary documents, as specified in Part 4 of ISO/IEC 29500. .dot Word 97-2003 Template Template for Word 97-Word 2003 files. .dotm Word Macro-Enabled Template Template for creating new Word 2019, Word 2016, Word 2013, Word 2010, and Office Word 2007 files that contain macros. Users who want to include UI customizations or macros in the template should use this file format. .dotx Word Template Template for creating new Word 2019, Word 2016, Word 2013, Word 2010, and Office Word 2007 files that do not contain macros. .htm, .html Web Page A web page that is saved as a folder that contains an .htm file and all supporting files, such as images, sound files, cascading style sheets, scripts, and more. Good for posting on a site or editing with Microsoft Office FrontPage or another HTML editor. .htm, .html Web Page, Filtered Saving in the Web Page, Filtered file format removes Microsoft Office-specific tags. If users save in filtered HTML and then re-open the file in an Office application, text and general appearance are preserved. However, some features might work differently. .mht; .mhtml Single File Web Page A web page as a single file that includes an .htm file and all supporting files, such as images, sound files, cascading style sheets, scripts, and more. .odt OpenDocument Text A file format for saving Word 2019, Word 2016, and Word 2013 files so that they can be opened in document applications that use the OpenDocument format. Users can also open documents in the .odt format in Word 2019, Word 2016, and Word 2013. Formatting might be lost when users save and open .odt files. .pdf PDF Portable Document Format (PDF), a PostScript-based electronic file format that was developed by Adobe Systems. It preserves document formatting and enables file sharing. Files that use the PDF file format can be saved and opened by using Word 2019, Word 2016, and Word 2013. Important: PDF files might not have a perfect page-to-page correspondence with the original. For example, the pages might break at different locations..rtf Rich Text Format RTF controls the representation and formatting of a document, both on the screen and in print. When they use the .rtf file format, documents created under different operating systems and with different software applications can be transferred between those operating systems and applications. .txt Plain Text When users save a document as a .txt file, the document loses all formatting. .wps Works 6-9 Document This is the default file format of Microsoft Works, versions 6.0 through 9.0. .xml Word 2003 XML Document The XML format supported in Office Word 2003. .xml Word XML Document The XML file format supported in Word 2019, Word 2016, Word 2013, Word 2010, and Office Word 2007 (Open XML). .xps XPS Document XML Paper Specification, a file format that preserves document formatting and enables file sharing. When the XPS file is viewed online or printed, it keeps exactly the format that users intended, and the data in the file cannot be easily changed. You can use Word 2019, Word 2016, or Word 2013 to save documents in the XPS Document file format, but you can't open them by using Word 2019, Word 2016, or Word 2013. File formats that are supported in Excel
The following tables describe the file formats that are supported in Excel.ExtensionName of file formatDescription.csv CSV (Comma delimited) Saves a workbook as a comma-delimited text file for use on another Windows operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .csv CSV (Macintosh) Saves a workbook as a comma-delimited text file for use on the Macintosh operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .csv CSV (MS-DOS) Saves a workbook as a comma-delimited text file for use on the MS-DOS operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .dbf DBF 3, DBF 4 dBase III and IV. Users can open these files formats in Excel 2019, Excel 2016, and Excel 2013, but, users can't save an Excel file to dBase format. .dif DIF (Data Interchange Format) Saves only the active sheet. .htm, .html Web Page A web page that is saved as a folder that contains an .htm file and all supporting files, such as images, sound files, scripts, and more. .mht, .mhtml Single File Web Page A web page that is saved as a single file that includes an .htm file and all supporting files, such as images, sound files, scripts, and more. .ods OpenDocument Spreadsheet A file format for saving Excel 2019, Excel 2016, and Excel 2013 files so that they can be opened in spreadsheet applications that use the OpenDocument Spreadsheet format, such as Google Docs and OpenOffice.org Calc. Users can also open spreadsheets in the .ods format in Excel 2019, Excel 2016, and Excel 2013. When users save and open .ods files, they might lose formatting. .pdf PDF Portable Document Format, a format that preserves document formatting and enables file sharing. When the PDF format file is viewed online or printed, it keeps the format that users intended. Data in the file cannot be easily changed. The PDF format is also useful for documents that will be reproduced by using commercial printing methods. .prn Formatted Text (Space delimited) Lotus space-delimited format. Saves only the active sheet. .slk SYLK (Symbolic Link Format) Saves only the active sheet. .txt Text (Tab delimited) Saves a workbook as a tab-delimited text file for use on another Windows operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .txt Text (Macintosh) Saves a workbook as a tab-delimited text file for use on the Macintosh operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .txt Text (MS-DOS) Saves a workbook as a tab-delimited text file for use on the MS-DOS operating system, and makes sure that tab characters, line breaks, and other characters are interpreted correctly. Saves only the active sheet. .txt Unicode Text Saves a workbook as Unicode text, a character encoding standard that was developed by the Unicode Consortium. Saves only the active sheet. .xla Excel 97-2003 Add-In The Excel 97-2003 Add-In, a supplemental program that runs additional code and supports VBA projects. .xlam Excel Add-In The XML-based and macro-enabled Add-In format for Excel 2019, Excel 2016, Excel 2013, and Office Excel 2007. An Add-In is a supplemental program that runs additional code. Supports VBA projects and Excel 4.0 macro sheets (.xlm). .xls Excel 97-Excel 2003 Workbook The Excel 97-Excel 2003 Binary file format. .xls Microsoft Excel 5.0/95 Workbook The Excel 5.0/95 Binary file format. .xlsb Excel Binary Workbook The binary file format for Excel 2019, Excel 2016, Excel 2013, and Excel 2010 and Office Excel 2007. This is a fast load-and-save file format for users who need the fastest way possible to load a data file. Supports VBA projects, Excel 4.0 macro sheets, and all the new features that are used in Excel. But, this is not an XML file format and is therefore not optimal for accessing and manipulating content without using Excel 2019, Excel 2016, Excel 2013, Excel 2010 or Excel 2007 and the object model. .xlsm Excel Macro-Enabled Workbook The XML-based and macro-enabled file format for Excel 2019, Excel 2016, Excel 2013, Excel 2010 and Office Excel 2007. Stores VBA macro code or Excel 4.0 macro sheets (.xlm). .xlsx Excel Workbook The default XML-based file format for Excel 2019, Excel 2016, Excel 2013, Excel 2010, and Office Excel 2007. Can't store VBA macro code or Microsoft Excel 4.0 macro sheets (.xlm). .xlsx Strict Open XML Spreadsheet An ISO strict version of the Excel Workbook file format (.xlsx). .xlt Excel 97 - Excel 2003 Template The Excel 97 - Excel 2003 Binary file format for an Excel template. .xltm Excel Macro-Enabled Template The macro-enabled file format for an Excel template for Excel 2019, Excel 2016, Excel 2013, Excel 2010, and Office Excel 2007. Stores VBA macro code or Excel 4.0 macro sheets (.xlm). .xltx Excel Template The default file format for an Excel template for Excel 2019, Excel 2016, Excel 2013, Excel 2010, and Office Excel 2007. Can't store VBA macro code or Excel 4.0 macro sheets (.xlm). .xlw Excel 4.0 Workbook An Excel 4.0 file format that saves only worksheets, chart sheets, and macro sheets. Users can open a workbook in this file format in Excel 2019, Excel 2016, and Excel 2013. But, users can't save an Excel file to this file format. .xml XML Spreadsheet 2003 XML Spreadsheet 2003 file format. .xml XML Data XML Data format. .xps XPS Document XML Paper Specification, a file format that preserves document formatting and enables file sharing. When the XPS file is viewed online or printed, it maintains exactly the format that users intended, and the data in the file cannot be easily changed. File formats that are supported in PowerPoint
The following tables describe the file formats that are supported in PowerPoint.ExtensionName of file formatDescription.bmp Device Independent Bitmap A slide that is saved as a graphic for use on web pages. .emf Enhanced Windows Metafile A slide that is saved as a 32-bit graphic (for use with Microsoft Windows 95 and later versions). .gif GIF Graphics Interchange Format A slide that is saved as a graphic for use on web pages. .jpg JPEG File Interchange Format A slide that is saved as a graphic for use on web pages. .mp4 MPEG-4 Video A presentation that is saved as a video. .odp OpenDocument Presentation A format that can be opened in presentation applications that use the OpenDocument Presentation format, such as Google Docs and OpenOffice.org Impress. Users can also open presentations in the .odp format in PowerPoint. Some information might be lost when users save and open .odp files. .pdf PDF Portable Document Format, a PostScript-based electronic file format that was developed by Adobe Systems. It preserves document formatting and enables file sharing. .png PNG Portable Network Graphics Format A slide that is saved as a graphic for use on web pages. .pot PowerPoint 97-2003 Template A template for PowerPoint 97 to Office PowerPoint 2003 presentations. .potm PowerPoint Macro-Enabled Template A template for PowerPoint 2019, PowerPoint 2016, PowerPoint 2013, PowerPoint 2010, and Office PowerPoint 2007 presentations that contain macros. .potx PowerPoint Template A template for creating new PowerPoint 2019, PowerPoint 2016, PowerPoint 2013, PowerPoint 2010, and Office PowerPoint 2007 presentations. .ppa PowerPoint 97-2003 Add-In A PowerPoint 97 to Office PowerPoint 2003 add-in. .ppam PowerPoint Add-In An add-in that stores custom commands, Visual Basic for Applications (VBA) code, and specialized features. .pps PowerPoint 97-2003 show A presentation that always opens in Slide Show view instead of in Normal view. .ppsm PowerPoint Macro-Enabled Show A slide show that includes macros. .ppsx PowerPoint Show A presentation that always opens in Slide Show view instead of in Normal view. .ppt PowerPoint 97-2003 Presentation The default PowerPoint 97 to Office PowerPoint 2003 format. .pptm PowerPoint Macro-Enabled Presentation A presentation that contains Visual Basic for Applications (VBA) code. .pptx PowerPoint Presentation The default PowerPoint 2019, PowerPoint 2016, PowerPoint 2013, PowerPoint 2010, and Office PowerPoint 2007 XML-based file format. .pptx PowerPoint Picture Presentation A PowerPoint 2019, PowerPoint 2016, PowerPoint 2013, PowerPoint 2010 or PowerPoint 2007 presentation where each slide is converted into a picture. Saving a file as a PowerPoint Picture presentation reduces the file size, but some information is lost. .pptx Strict Open XML Presentation An ISO strict version of the PowerPoint Presentation file format (.pptx). .rtf Outline/RTF A presentation outline that is saved as a text-only document that provides smaller file sizes and the ability to share macro-free files with other users who might not have the same version of PowerPoint or the operating system. Any text in the notes pane is not saved with this file format. .thmx Office Theme A style sheet that includes definitions of a color theme, font theme, and effect theme. .tif TIFF Tag Image File Format A slide that is saved as a graphic for use on web pages. .wmf Windows Metafile A slide that is saved as a 16-bit graphic (for use with Microsoft Windows 3. x and later versions). .wmv Windows Media Video A presentation that is saved as a video. PowerPoint 2019, PowerPoint 2016, and PowerPoint 2013 presentations can be saved at High Quality (1024 x 768, 30 frames per second); Medium Quality (640 x 480, 24 frames per sec); and Low Quality (320 X 240, 15 frames per second). The WMV file format plays on many media players, such as Windows Media Player. .xml PowerPoint XML Presentation The XML format that is supported in PowerPoint 2019, PowerPoint 2016, PowerPoint 2013, PowerPoint 2010, and Office PowerPoint 2007. .xps XPS Document XML Paper Specification (XPS), an electronic paper format for exchanging documents in their final form. Unsupported file formats in Office
Office applications do not support the file formats described in the following tableApplicationUnsupported file formatExcel - Excel Chart (Excel 2.0, 3.0, and 2.x file formats) (.xlc) - Lotus 1-2-3 file formats (all versions) (.wk1, .wk2, .wk3, .wk4, .wks) - Microsoft Works (all versions) (.wks) - DBASE II file format (.dbf) - Quattro Pro for MS-DOS file format (.wq1) - Quattro Pro 5.0 and 7.0 for Windows (.wb1, .wb3) PowerPoint - Opening or saving to PowerPoint 95 (or earlier) file formats - Pack and Go Wizard (.ppz) files. - Web Page (.htm, .html) files Additional file format information
This section provides additional file formats and whether they are supported in the applications in Office.Microsoft Office Clipboard file formats
Users can paste data from the Office Clipboard into Word, Excel, and PowerPoint if the Office Clipboard data is in one of the formats shown in the following table.File formatExtensionDescriptionPicture .wmf or .emf Pictures in Windows Metafile Format (WMF) or Windows Enhanced Metafile Format (EMF). Note: If users copy a Windows metafile picture from another program, Excel pastes the picture as an enhanced metafile.Bitmap .bmp Pictures stored in Bitmap format (BMP). Excel file formats .xls Binary file formats for Excel versions 5.0/95, Excel 97-2003, Excel 2013, Excel 2016, and Excel 2019. SYLK .slk Symbolic Link Format. DIF .dif Data Interchange Format. Text (tab-delimited) .txt Tab-separated text format. CSV (Comma-delimited) .csv Comma-separated values format. Formatted text (Space-delimited) .rtf Rich Text Format (RTF). Only from Excel. Embedded object .gif, .jpg, .doc, .xls, or .bmp Excel objects, Excel 2013 objects, objects from correctly registered programs that support OLE 2.0 (OwnerLink), and Picture or another presentation format. Linked object .gif, .jpg, .doc, .xls, or .bmp OwnerLink, ObjectLink, Link, Picture, or other format. Office drawing object .emf Office drawing object format or Picture (Windows enhanced metafile format, EMF). Text .txt Display Text, OEM Text. HTML .htm, .html Hypertext Markup Language. Note: When users copy text from another program, Excel pastes the text in HTML format, regardless of the format of the original text.Single File Web Page mht, .mhtml This file format integrates inline graphics, applets, linked documents, and other supporting items referenced in the document. Opening or viewing unsupported file formatsOoxml Strict Converter For Office 2010 For Mac For Free
If the file format that users want to use is not supported, they can try the following methods to open the file.Ooxml Strict Converter For Office 365
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Search the internet for a company that makes file format converters for file formats that are not supported in the application.
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Save to a file format that another program supports. For example, users might want to import their Word, Excel, or PowerPoint file into another program that does not support the application's native file format. However, the other program might support importing another supported file format, such as a text file format. In this case, users can save their work in text file format, and then from the other program, import the text file.Ooxml Strict Converter For Office 2010 For Mac DownloadRelated topics
