ESET Nod32: Fix the "Undocumented Serious Error (0x101a)"

If you notice that your Nod32 icon is orange or red and its displaying a little popup stating your updates are failing, check the "Update" tab to see any status messages.

If it is displaying "Undocumented Serious Error (0x101a)" or "General Compiler Error" in the status message, it means something has gone wrong during the update process.

Clearing the update cache, reboot and try updating again.

  • Click on "Setup"
  • "Enter entire advanced setup tree..."


  • Select "Update" in the tree.
  • Click "Clear..." beside "Clear update cache"


If it doesn't fix the problem, you may have to reinstall the antivirus.

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