Windows Defender cannot install the definition update. Is there a log file to view so you can try to determine the cause of the problem?
Is。 You can use the MpCmdRun.exe tool to enable defining update diagnostics.
1. Click the Start button, type cmd in the search box, right-click cmd in the Programs list, and then click Run as Administrator.
2. At the command prompt, type the following commands. Press ENTER after you type each command:
CD C:\Program http://www.aliyun.com/zixun/aggregation/19352.html ">files\windows Defender
Mpcmdrun-signatureupdate-trace-grouping 15-getfiles
3. At the command prompt, type exit, and then press Enter to close the command prompt.
4. After the completion of the tracking, check the Mptrace.log file. This file is located in the following folder:
C:\ProgramData\Microsoft\Windows Defender\support\mptrace.log
