Fix problems opening Norton device security for Windows
To fix the problem, restart your computer and try opening your Norton device security product. If you are still unable to open, download and run the Norton Remove and Reinstall tool.
If you experience this problem with Norton Secure VPN on Windows, read Fix problem opening Norton Secure VPN.
Download and run the Norton Remove and Reinstall tool
If you have Norton Family installed, uninstall it before you run the Norton Remove and Reinstall tool.
Download the Norton Remove and Reinstall tool.
Press Ctrl + J key, to open the Downloads window in your browser.
Double-click the NRnR icon.
Read the license agreement and click Agree.
Click Remove & Reinstall.
If you received your Norton product from your service provider, you may see the Remove button instead.
Click Continue or Remove.
Click Restart Now.
After the computer restarts, follow the on-screen instructions to reinstall the Norton product.