Ie tools for validating xml
As mentioned above, a common misconfiguration that can lead to signature validation problems is using the private key of one key pair to sign and the public key of another key pair to validate.
Make sure that you're using the right key to validate.
At the very least, make sure the current versions work before opening that can of worms.
The goal of the IEQABar project is to integrate web site validation and quality assurance facilities into Microsoft Internet Explorer for Windows.
The HPXML Validator allows software developers to validate and inspect their tool's HPXML formatted data.
You must separate each site using commas or carriage returns.
For example: You can create and use a custom XML file with the Enterprise Mode Site List Manager to add multiple sites to your Enterprise Mode site list at the same time.
You will also note from the XML document above that Open SP (and thus the W3C Mark Up Validator) is unable to detect the invalid attribute but HTML Tidy reports the obvious error, using both tools you can make your documents truely valid!
Tidy unfortunately does not detect some other errors, it would for example silently recover from an unquoted attribute value like in element which it would trim as serve an error as improperly nested elements.