Upgrade of your ESET application has failed

Check the current installation status of your ESET application

Do you have an account with Administrator privileges?
You need an account with Administrator privileges. If you are not an Administrator, you cannot upgrade or uninstall. Contact your system administrator to upgrade.

Is the ESET application working properly after a failed upgrade?
After the failed upgrade, open the main program window to verify the ESET application is working correctly.
If the upgrade failed and the ESET application is not accessible, or the ESET application reports a Security alert with multiple messages, proceed to step 2 as soon as possible.

Uninstall your old ESET application or any previously installed antivirus software

Use the ESET Uninstaller tool to manually uninstall an ESET application

Uninstallers (removal tools) for common Windows antivirus software

Install the latest version manually

I have ESET Endpoint Antivirus:

I have ESET Endpoint Security:

For more information, refer to the Install or upgrade ESET Endpoint Security or ESET Endpoint Antivirus on a client workstation Knowledgebase article.