XmlSigner 

version 1.7.1.0
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- fixed problem with German edition of Windows 

version 1.7.0.0
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- changed author to Seyfor, a.s., new code-signing certificate

version 1.6.0.0
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- more URLs for which XmlSigner is invoked automatically without prompt by Chrome/Edge/Firefox
- displayed XML is formatted

version 1.5.1.0
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- fix for Windows 11 (certificate dialog sometimes appeared under window
  with displayed XML data to sign)

version 1.5.0.0
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- possibility to allow automatic opening of XmlSigner from browser without prompt
  (works in Edge, Firefox and Chrome, uses AutoLaunchProtocolsFromOrigins policy)

version 1.4.1.0
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- program uses component AvalonEdit for displaying of XML (instead of MS WebBrowser)

version 1.4.0.0
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- possibility to run multiple instances on terminal server
- removed 64KB limit of message to be signed

version 1.3.0.0
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- C14N canonicalization of signed message

version 1.2.0.0
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- added Serbian localization (both Latin and Cyrilic)

version 1.1.0.0 (initial)
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Program brings support for digital XML signatures (XMLDsig and XAdES-B format) in web browsers
Program uses AvalonEdit component (Copyright (c) AvalonEdit Contributors)

System requirements:
- Windows 7 SP1 or newer
- .NET framework 4.8

Installation (requires administrator rights):
- run XmlSigner_Setup.msi
- choose, if XmlSigner should be installed for actual user or all users
- choose, if XmlSigner should be available in Mozilla Firefox version 60 and higher (by setting ImportEnterpriseRoots policy of Firefox)
- choose the shortcuts which should be created

Supported browsers:
Internet Explorer, Google Chrome, "new" Microsoft Edge (built on Chromium), Opera: these browser should work automatically without any other action
Mozilla Firefox 60 and higher: this browser should work if the support for it was checked during installation. Firefox needs to be restarted after installation of XmlSigner

"Old" Microsoft Edge: after installation this command needs to be run (as administrator):

CheckNetIsolation LoopbackExempt -a -n="Microsoft.MicrosoftEdge_8wekyb3d8bbwe"

This command allows MS Edge communication with services running on localhost.
Note: this command allows the communication with services on localhost globally, not only for XMLSigner. That's the reason why this command is not part of XmlSigner installation.