ESET SSL issues due to windows update


  • HTTPS websites fail to load or you receive the error message “Connection is untrusted” when using your web browser with ESET products
  • Websites with SSL Certificates are not accessible
  • You receive the error message: “sec_error_reused_issuer_and_serial”
  • Root certificate not imported correctly


  1. Figure 1-2
  2. Restart your computer.

You should now be able to access web pages that use SSL certificates without interference. If the issue persists, you can follow the steps in the next section to temporarily disable SSL protocol filtering to continue browsing without interruption.