Microsoft has given a very marvelous updates to the Windows 10 for properly functioning of the computer. In the latest updates, it gives you Windows defender program. Actually the program is responsible for the scanning of the computer to remove the infectious files present in it. But sometimes when you run this program in the computer, you get Windows defender error 0x8050801. Occurring of the defender error code 0x8050801 in the PC is not a genuine issue. You get it due to the deletion of Windows system files associated with this program. So, it is very important to fix the issue either with manual or with automatic error fixing methods. You can download and install Advanced System Repair Tool for automatic fixing of the issue.