You can verify whether a Windows installer service is running by looking in the Processes tab of the Task Manager. Many of these services are legitimate, such as an application upgrade from your web browser.
To resolve this installation issue, follow the instructions below starting with Solution I.
This error typically occurs when another Windows installation is trying to install or update on your computer. The other Windows installation may be active only in the background when the Windows Installer service continues to run as an active process.
If you continue to receive this installation error, continue to Solution II below.
If you are still unable to resolve your issue, email ESET Technical Support.