With the invention of new technology, Microsoft has introduced a very dynamic and very handy antivirus program in the new version of Windows operating system. You get the Windows defender program in your Windows computer that can scan the whole system to remove virus and other infections pretty well. But sometimes when you launch the program, it doesn’t get run and you see Windows defender error 0x8050800D on the computer screen. The defender error code 0x8050800D occurs in the computer mainly due to missing or deletion of the important files associated with Windows defender program. The computer gets stuck and nothing will work now. In this situation, you must apply the manual or automatic error fixing processes. You can download Advanced System Repair Tool for automatic fixing of the issue.