Microsoft has been upgrading the Windows OS versions time to time. You may get new features in Windows computer with every new release. Windows defender is also one of those features. It is a very powerful feature that comes to you as inbuilt program in Windows 10. You can scan the whole computer with this program to remove the infectious files or virus of the computer. But sometimes when you launch this feature, you get Windows defender error 0x80501002. Occurring of the defender error code 0x80501002 is a very critical issue as it doesn’t make you able to scan the computer for virus removal. In this situation, you should go through some manual or automatic error fixing methods. You can download and install Advanced System Repair tool for automatic fixing of the error.