[NAME]  - In Windows 10 Task Scheduler, I see this listed underTask Scheduler Library>Microsoft>Windows>Windows Defender>Windows Defender Scheduled Scan: [IMAGE]                 Have you tried disabling that task?
Windows Security Intelligence virus-definition update 1.313.1638.0 was supposed to improve Windows Defender but ended up breaking it instead. With the new definitions installed, running a full system scan in Windows Defender will lead to the program crashing, along with countless error messages from the event viewer and Windows Security. Quick scans, strangely enough, aren’t affected at all. The glitch is apparently caused by Windows Defender mishandling files it scans, particularly filenames that feature two periods in a row (like “myfile..now.jpg”). This includes system files with two periods that you might not have created as well. Read more here and how to fix. What is wrong with those s at Microsoft... ?  
Microsoft broke Win 10 Windows Defender