Follow these steps in order to resolve the authorization failure: :
Sometimes the error is caused by corrupted temporary files. Follow these steps in order to resolve the
Troubleshooting ESET: "Update Authorization Failed" Getting an error can be frustrating, especially when you need your antivirus to stay current. This error typically means your ESET product cannot verify its identity with the update servers. If you do not see a successful "Reply
If you do not see a successful "Reply from" message containing an IP address, your router, ISP, or VPN is blocking ESET's servers. 7. Perform a Clean Reinstallation You can check this by going to Help
: Ensure your subscription hasn't expired. You can check this by going to Help and support > Verify license validity .
Look at the Home screen. If the status is red or orange, your license may be expired. Click Help and Support in the left menu.