Since installing the Windows 10 Anniversary update, booting has been slow and the PC is sluggish for a while. As soon as I could get Task Manager open I saw C: had 100% utilisation. I ran Resource Monitor and saw that MsMpEng apparently had a long list of my installed programs running at the same time. Each was reading roughly 60KB a second. This lasted a minute or so. What's going on?
📎 AI Summary:
The thread discusses slow boot times and overall sluggishness experienced after installing the Windows 10 Anniversary Update. The original poster notices high CPU utilization caused by MsMpEng (Windows Defender) reading multiple programs simultaneously. A respondent explains that MsMpEng is part of Windows Defender, and suggests that the cloud analytics feature introduced in the update might be building a system baseline, possibly explaining the temporary high activity.
The thread discusses slow boot times and overall sluggishness experienced after installing the Windows 10 Anniversary Update. The original poster notices high CPU utilization caused by MsMpEng (Windows Defender) reading multiple programs simultaneously. A respondent explains that MsMpEng is part of Windows Defender, and suggests that the cloud analytics feature introduced in the update might be building a system baseline, possibly explaining the temporary high activity.
Solution
- Joined
- Jul 4, 2015
- Messages
- 8,995
MsMpEng is the Windows Defender service. With the anniversary updates comes cloud analytics to Windows Defender. It may be building a baseline for your system. How long have you had the update installed?