: Go to Help and support > Change License and re-type your key. Clear Update Cache : Press F5 to open Advanced Setup. Go to Update > Profiles > Updates . Click Clear next to "Clear update cache." Restart your computer and try updating again.
Download the latest installer for your specific product from the official ESET website. : Go to Help and support > Change
: Ensure no "ghost" proxy is enabled in Advanced Setup > Connectivity > Proxy Server . : Go to Help and support > Change