The blog of Windows Wally, a Windows Support Technician helping common people solve frustrating computer problems.

Why Is Windows 10 File Explorer Really Slow?

Reader Question:
“Hi Wally, Why is Windows 10 file explorer so very very slow? I don’t know what it is, but it just doesn’t want t work. It starts working again when I restart but I don’t want to restart everytime it starts actin up. Any advice would be appreciated, Thank you!” – Mario H., United Kingdom

Before addressing any computer issue, I always recommend scanning and repairing any underlying problems affecting your PC health and performance:

  • Step 1 : Download PC Repair & Optimizer Tool (WinThruster for Win7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click “Start Scan” to find Windows registry issues that could be causing PC problems.
  • Step 3 : Click “Repair All” to fix all issues.

Setting up weekly (or daily) automatic scans will help prevent system problems and keep your PC running fast and trouble-free.

Wally’s Answer: Windows 10 saw an amazing adoption rate with 14 million devices running Windows 10 twenty four hours after its release. However, some users do experience issues from time to time. Here we will look at some ways to fix Windows File Explorer speed issues.


Windows 10 File Explorer is really slow or it has stopped responding.


A few things can cause this problem. This can happen when the computer has not restarted for a while. This can also happen due to the accumulation of junk files in Windows.


Here are some ways to fix the slow File Explorer problem:

Try Restarting The Computer

A lot of us use don’t shut down our computers anymore. This is because we use them so much that shutting them down would be inconvenient. However, this can cause the computer to slow down and stop functioning correctly.

Restarting the computer should fix this problem.

Use WinThruster to Optimize Windows 

You may have noticed that your computer ran faster when it was new. As time passes, Windows tends to accumulate junk files and extra bulk which retards its performance in the long run.

File Explorer -- WinThruster - May 2017 - 2 -- Windows Wally

Using optimization software like WinThruster can help unclog the inner workings of Windows and make it run faster again. Try it.

Use The SFC Command To Scan Windows

The sfc command does two things. It scans the Windows installation’s system files, and it replaces damaged or missing files.

  1. Press Windows Key + X > click Command Prompt (Admin)
    0x800f081f - Windows 10 - Sleep Mode - WIndowsKey+X - Command Prompt (Admin) -- Windows Wally
  2. Type the command sfc /scannow > press Enter
    0x800f081f - Windows 10 - Sleep Mode - sfc scannow -- Windows Wally

Fix Windows 10 Using The DISM Command

The DISM tool comes included with Windows Vista and above. It can be used to repair Windows among other things. If the SFC command doesn’t work, then try using the DISM tool instead. Click here to learn more about how to use the DISM tool.

Is Your PC Healthy?

I always recommend to my readers to regularly use a trusted registry cleaner and optimizer such as WinThruster or CCleaner. Many problems that you encounter can be attributed to a corrupt and bloated registry.

Happy Computing! :)

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About the Author

Windows Wally is a helpful guy. It’s just in his nature. It’s why he started a blog in the first place. He heard over and over how hard it was to find simple, plain-English solutions to Windows troubleshooting problems on the Internet. Enter: Windows Wally. Ask away, and he will answer.