Windows 10 – Avast AVG Compatibility Issues

Posted: December 1, 2019 in Windows 10
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Compatibility Issues with some earlier versions of Avast and AVG anti-virus editions affecting Windows 10


  • Microsoft and Avast have identified problems with using earlier/outdated versions of Avast and AVG anti-virus software on Windows 10 Versions 1909 and 1903
  • These compatibility issues prevent upgrading Windows 10 from an earlier version to later Windows 10 versions – 1903(May 2019 Update) and 1909(November 2019 Update)
      • Note: The inability to upgrade impacts upgrading via Windows Update, the Media Creation Tool created media, and the online Upgrade Now methods
  • The compatibility issues surfaced in late November 2019
  • Avast and AVG versions 19.5 and lower are no longer compatible with Windows 10
  • Devices with installed versions of Avast or AVG 19.5 or lower will not be offered or capable to upgrade to Windows 10 1909 or Windows 10 1903
  • End users of Avast and AVG products should/need to download and install an updated version of their Avast or AVG application – Editor Note: Preferably the latest available version
  • End users of Avast or AVG anti-virus software that install the latest version will no longer have the compatibility issue preventing upgrading Windows 10 from an earlier version to Windows 10 versions 1909 or 1903

Additional Information:



Nov 23 2019: Initial Draft Date

Nov 26 2019: Final Draft Date

Dec 1 2019: Original Publish Date

Dec 7 2019:  Added ‘Note’ and ‘Editor Note’ in the  ‘Comments’ section

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