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Editorial Team
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Asked: 2026-05-31T13:20:53+00:00

I was trying to parse an XMLfile created using Visual Studio using a tool

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I was trying to parse an XMLfile created using Visual Studio using a tool which uses Xerces parser and I got “content not allowed in prolog” error.

Now when I create an XML file using some other editor like notepad++ and have the exact same content as the one created above I don’t get this error.

What do you think might be the problem. You might understand that this is not a repeat question.

EDIT
So i found out the problem. Its because the tool which i use could not handle the Bom at the beginning of the file

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1 Answer

  1. Editorial Team

    The file starts with a UTF-8 byte-order mark. The XML specifications say that documents may start with a BOM, so it should be fine. Is it possible that the tool uses an old version of Xerces which didn’t cope with a BOM? Other than that, the file looks fine to me.

    Is this a tool you have the source code to? Are you able to create a short but complete program which demonstrates the problem, failing to parse it? Can you try a later version of Xerces?

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