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Do you Windows 10 Quick Fixfind Windows 10 slow at times? That it goes from speedy to sluggish for no obvious reason? Well, before you start wor­rying about malware (which used to be the most common culprit), try these quick fixes.

  1. Open the Command Prompt in Admin mode. You can right-click on the Start menu and choose “Command Prompt (Admin)” — or try one of these other ways to open the command prompt.
  2. If a “User Account Control” warning appears, click “Yes” — you do want to let this app to make changes to your device. If nothing seems to happen, check your taskbar for a new icon — this warning some­times hides behind other windows.
  3. Once you see a black box with the title “Administrator: Command Prompt”, click into it and type the two fol­lowing com­mands, one after another:
        net stop "Windows Search"
        net stop superfetch

You should see an improvement within seconds of these two ser­vices stopping.

Update: “Superfetch” has now been renamed to “SysMain”, which can be dis­abled in the Services panel like this.

Why Does Windows 10 Slow Down Like This?

Why is this hap­pening? Well, Windows 10 seems to have for­gotten how to do basic OS tasks that pre­vious ver­sions did pretty well — like man­aging disks and its own pro­cesses. The “Windows Search” and “super­fetch” ser­vices are sup­posed to help to keep your system fast and responsive. Unfortunately, they often just decide to demand all the resources they can. Other applic­a­tions then struggle to get any access to your disk drives.

You can see this hap­pening in the Task Manager. Right-click on the taskbar to start that, then look at the disk usage in the ‘Performance’ tab. If it’s maxed out, that’s a problem. However, starting extra pro­grams — even the Task Manager — when your system is slow just aggravates things. So, I find that these two ser­vices are so often to blame that it’s quicker to just open the command prompt and stop them anyway.

With luck, Microsoft will get around to fixing this even­tually and this post will be obsolete. Until then, I hope this will help you fix your Windows 10 slow­downs. Please feel free to share it to help others.