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Consider the following scenario. You try to open a document in Microsoft Office Word 2007, in Microsoft Word 2010 or in Microsoft Word 2013 that is using one of the following file formats:
The file contains custom XML elements which are no longer supported by Word. If you save this file, these custom XML elements will be removed permanently.
Then when you click OK, the custom XML elements do not display.
Note Microsoft Word 2013 displays the error message for following file formats in addition to the file formats previously listed:
Versions of Word that are distributed by Microsoft after January 10, 2010 no longer read the custom XML markup that may be contained within .DOCX, .DOCM, .DOTX, .DOTM or .XML files. The new versions of Word 2007, Word 2010 and Word 2013 can still open these files, but any custom XML markup is removed.
Custom XML markup in a Word document is visible as pink (the default color) tag names surrounding text in a document:
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The removal of custom XML markup is the result of a United States court ruling on December 22, 2009. Generally, customers who purchase or license Word 2007, Word 2010 or Word 2013 from Microsoft after January 10, 2010 for use in the United States and its territories have to use updated software that does not include a particular custom XML tagging implementation.
The following features of Word are not affected by the update.
Note If you are a developer of a solution that uses custom XML markup, be aware that support for custom XML markup is no longer available. Many of the scenarios implemented by using custom XML markup can be implemented by using alternative technologies, such as content controls, form fields, and bookmarks which are available in Word 2007, Word 2010 and Word 2013. For example, as explained in the following articles, content controls (in addition to these other technologies such as bookmarks) enable developers to create structured documents and can be used to assign arbitrary values to structured content. These arbitrary values can be used to assign semantic meaning to parts of your content.
For more information about content controls, visit the following Microsoft webpages:
Creating Word 2007 Templates Programmatically
Building Word 2007 Document Templates Using Content Controls
Mapping Word 2007 Content Controls to Custom XML Using the XMLMapping Object
How to: Bind a Content Control to a Node in the Data Store
Taking Advantage of Bound Content Controls
The Easy Way to Assemble Multiple Word Documents
Creating Data-Bound Content Controls using the Open XML SDK and LINQ to XML
(http://support.microsoft.com/kb/978951/ )Description of the January 2010 update for Word 2003 and Word 2007
(http://support.microsoft.com/kb/2445060/ )Custom XML mapping is removed when you open a document in Word 2010
(http://support.microsoft.com/kb/2761189/ )Custom XML markup is removed when you open a document in Word 2013