10 December 2017

Create a file LINKS.CMD with following content and execute as administrator

REG ADD HKEY_CURRENT_USER\Software\Classes\.htm /ve /d htmlfile /F
REG ADD HKEY_CURRENT_USER\Software\Classes\.html /ve /d htmlfile /F 
REG ADD HKEY_CURRENT_USER\Software\Classes\.shtml /ve /d htmlfile /F 
REG ADD HKEY_CURRENT_USER\Software\Classes\.xht /ve /d htmlfile /F 
REG ADD HKEY_CURRENT_USER\Software\Classes\.xhtml /ve /d htmlfile /F