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Question
Saturday, September 10, 2016 12:12 AM | 2 votes
I know many people have this problem. My case is 100% reproducible, so I want to give it a shot here to see I can get some tips to remedy this.
To reproduce it is very simple on my Windows 10 machine: just open File Explorer, then do nothing. You hear me right: do nothing. Within 10 to 15 minutes, Windows Explorer takes more than 50% of CPU power on a quad-core machine as shown by the following screen capture:
Closing File Explorer does not make any difference. I have tried to close everything that I can close, but it makes no difference. The only ways to stop the high CPU usage are the following:
1. Reboot the machine.
2. Restart Windows Explorer in Task Manager.
The computer has the latest Windows updates. It has been having this problem for a long time (at least many months).
Hong
All replies (7)
Saturday, September 10, 2016 7:18 PM âś…Answered | 1 vote
you could have zipped the file, that would have made it easier to download.
I would personally uninstall Norton360 and test if the issue remains.
80% of the time in in explorer.exe, of which a large chunk is used in zipfldr.dll!CZipFolder::EnumObjects
so it seems to be reading a compressed folder.
From the trace I could not find the path to the file quickly, but you can use Resource Monitor to look which file the explorer process is accessing, then delete the zip file.
btw.: 20% of the time was used by a process called "Auto Resolution.exe", which seems to be from LG. I find this a bit it excessive for a program which is supposed to just adjust the screen resolution.
Saturday, September 10, 2016 1:10 AM
I think you should reinstall you OS!
Saturday, September 10, 2016 6:49 AM | 1 vote
To diagnose a performance problem you should use the Windows performance toolkit, the instructions for which can be found in this wiki
Saturday, September 10, 2016 8:29 AM
Hi Hong,
I've tried for over 15 minutes, and nothing strange has occurred.
It's my screenshot.
Your Windows Explorer uses about 300MB memory.
I suppose it's very odd.
# In my case, it's around 40MB memory, and usually 0.0% CPU.
So, as EckiS mentioned, it is better to user Windows performance toolkit, or to re-install Windows 10.
Regards,
Ashidacchi
Saturday, September 10, 2016 5:13 PM
Thanks for the tip, Ecki. I recorded the performance only for about 5 seconds or so, but WPR still created a 5 GB file. I opened the file, but could not find any clue. I recorded the file after closing every app except Task Manager and WPR.
Ashidacchi, thank you for the test. I think it is not a universal problem for Windows 10. It is something that occurs only in a certain environment. I am trying to find the culprit.
Hong
Saturday, September 10, 2016 8:12 PM
Thanks a lot for looking into it. I appreciate it greatly. I was trying to generate a much smaller file before seeing your response. I noticed it recorded much more than 5 seconds (I stopped at 5 seconds to enter the description slowly with high CPU usage). I will try to skip the description next time to see if it helps.
Auto Resolution usually takes only about 1% of CPU. The tips are excellent. I will look into them and report back.
Hong
Sunday, July 14, 2019 3:32 PM | 1 vote
Hi,
Did you find a solution? I am running Windows 10. After the most recent update, Windows Explorer is taking 38-40% CPU and 70MB memory. I tried rebooting, powering down and draining the power, but when I restart, after everything loads it jumps back up to "Very high" power usage.
I'm not running Norton's. I use PCMatic and tried shutting it down with no impact.