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Norton web extensions will not install on Windows 10 Firefox 64 bit 66.0.3
OS - Windows Version 10.0.17763 Build 17763; Browser - Firefox 64 bit version 66.0.3.
Issue: Norton browser extensions will not install. The Norton browser extension installs are initiated from the Norton UI. The failure apparently occurs with the download. I get the "The add-on downloaded from this site could not be installed because it appears to be corrupt." error message for all the extensions.