- ESET interface shows the error code MSI 1921 if there is an installation error.
- Uninstall the product from your system and then re-install it after a few minutes to resolve the issue.
- To do so, you have to download the ESET tool to your system from the official site. Save the downloaded file to your desktop.
- Go to the Ethernet Properties window and uninstall the Epfw NDIS LightWeight Filter file.
- In the Run dialog box, key in ncpa.cpl and tap the OK button.
- Find your network adapter and choose the Properties option.
- Select the Epfw NDIS LightWeight Filter option using the checkbox available near it and choose the Uninstall option.
- The proceeding step is to restart the system in Safe mode.
- Launch the Command Prompt after the system turns on and key in cd/users/username/Desktop and tap the Enter key.
- Type ESET Uninstaller.exe and then specify Y when the confirmation message appears.
- Check the number displayed near the ESET products and key in the number of the product that you want to remove.
- Mention the letter Y to confirm and then wait until the tool runs the uninstall process.
- Now, restart your computer in the Normal mode and check if the ESET product has been uninstalled completely.
- Download the ESET software on your system and check if the issue has been resolved.
