Resolve ESET Error Code MSI 1921

You might receive the ESET error code MSI 1921 while installing the ESET application for a home client. Perform the quick troubleshooting instructions below to clear the error.

 ESET Error Code MSI 1921
  • First, make sure that you are signed into your computer as an administrator.
  • Check if the ESET program file is in the Programs list.
  • If not, uninstall the ESET application from your computer in Safe mode. To do so, proceed with the instructions given below.

Uninstall ESET Manually Via ESET Uninstaller Tool

Before you start the uninstallation process, make sure to take a back up of your network adapter’s settings. Because, during the uninstallation process, there is a chance for the network settings to get erased. Similarly, make sure to uninstall the Epfw NDIS LightWeight Filter from your computer.

  • Now, download the ESET Uninstaller file from its official site.
  • Restart your Windows computer in Safe mode.
  • Now, open the CMD menu with admin rights.
  • If prompted, click the Yes button.
  • In the CMD window, enter the following command: cd/Users/“your user”/Desktop.
  • Make sure to replace your user in the above command with your computer name.
  • Tap the Enter button.
  • Tap the Y button on your computer’s keyboard.
  • Complete the uninstallation by following the on-screen instructions.
  • Once the ESET application has been uninstalled, reboot your computer.
  • After rebooting your computer, download the ESET installation file from its official site.
  • Now, open the ESET installation file on your computer.
  • Perform the prompts to complete the installation process.
  • Make sure to enter the correct activation key in the given field.
  • Now, the ESET application will be installed on your computer.

Alternative way: In case you encounter the same error again, then navigate to the .MSI installer files folder. Now, copy the extracted installer files and move them to a different location. After moving the extracted files, start the installation process. Now your ESET error code MSI 1921 is resolved completly.


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