This problem can happen due to a failed update. Restart the computer to resolve this problem. If you still cannot run a scan, you need to uninstall and reinstall Norton using the Norton Removal and Reinstall tool.
STEP 1: Restart the computer
- Exit all programs.
- Restart the computer.
If the problem persists, go to Step 2.
STEP 2: 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.
Save the file to the Windows desktop. On some browsers, the file is automatically saved to its default location.
- To open the Downloads window in your browser, press the + key.
- Double-click the icon.
- Read the license agreement, and click .
- Click .
You may see the button if Norton is from your service provider.
- Click or .
- Click .
After the computer restarts, follow the on-screen instructions to reinstall Norton.
Source : Official Norton Brand
Editor by : BEST Antivirus KBS Team