What clearing cache does and why you might want to

Cache is temporary data your computer stores to make programs run faster. When you visit a website, your browser saves images, scripts, and page layouts so it doesn't have to read them again. When you use an app, it caches settings and data the same way. Over time, this cache builds up and can slow your computer down, take up disk space, or cause a program to behave oddly if the cached data becomes corrupted.

Clearing cache is safe — you won't lose files, passwords, or anything permanent. The worst that happens is a website takes a few seconds longer to load the first time you visit it after clearing. Most people clear cache when a browser or app starts acting strange, when they're running low on storage space, or as routine maintenance. Windows 10 stores cache in different places depending on what you're clearing: your web browser has its own cache, Windows itself maintains a temporary files folder, and individual apps may cache data in their own locations. The steps differ slightly for each one.

Key Takeaways

  • Browser cache (Chrome, Edge, Firefox) is cleared through each browser's settings menu, usually under History or Privacy, and takes under a minute.
  • Windows temporary files live in the Temp folder and can be deleted through Settings > System > Storage > Temporary files, or manually through File Explorer.
  • Clearing cache does not delete your saved passwords, bookmarks, or browsing history unless you specifically check those boxes.
  • If a program is freezing or behaving strangely, clearing its cache is often the fastest fix before reinstalling.

Clearing cache in Microsoft Edge

Microsoft Edge is the default browser in Windows 10. Open Edge and look for the three-dot menu icon in the top right corner. Click it, then select Settings. On the left sidebar, click Privacy, search, and services. Under "Clear browsing data," you'll see a button that says Choose what to clear.

A window will pop up with checkboxes for different types of data. Make sure Cached images and files is checked — this is the cache. You can leave the other boxes unchecked unless you want to clear those too. At the top, set the time range to All time if you want to clear everything, or pick a specific range. Click Clear now and wait a few seconds for it to finish. If you want Edge to clear cache automatically every time you close it, go back to Settings > Privacy, search, and services and toggle on Clear browsing data under "Clear browsing data." Then check the box for Choose what to clear every time you close the browser.

Clearing cache in Google Chrome

Open Chrome and click the three-dot menu in the top right. Select Settings, then click Privacy and security on the left. Click Clear browsing data. A box will appear with several tabs — make sure you're on the Basic tab (not Advanced). Check that Cached images and files is selected, set the time range to All time at the top, and click Clear data.

Chrome also lets you clear cache on exit. In the same Privacy and security section, scroll down to "Clear browsing data" and toggle on Clear cookies and site data when you quit Chrome. This will automatically delete cache every time you close the browser completely, so you don't have to remember to do it manually.

Clearing cache in Firefox

Open Firefox and click the menu icon (three horizontal lines) in the top right. Select Settings, then click Privacy & Security on the left. Scroll down to "Cookies and Site Data" and click Clear Data. A window will open — make sure Cached Web Content is checked and click Clear.

To have Firefox clear cache automatically, stay in the Privacy & Security section and look for "History." In the dropdown next to "Firefox will," select Use custom settings for history. Check the box for Clear history when Firefox closes, then click the Settings button next to it and make sure Cache is checked. This way Firefox will handle the cleanup for you without any extra steps.

Clearing Windows temporary files through Settings

Windows stores temporary files in a system folder that you can clear without affecting your programs or documents. Open Settings (press the Windows key and type "Settings"). Click System on the left, then scroll down and click Storage. You'll see a breakdown of what's using space on your drive.

Click Temporary files. Windows will show you what it found — usually temporary files, recycle bin contents, and cached app data. Check the boxes next to the items you want to delete. Most people check everything here. Click Remove files and wait for it to finish. This can free up several gigabytes if you haven't done it in a while, and it's the safest method because Windows handles the deletion itself.

Clearing temporary files manually through File Explorer

If Settings doesn't work or you want more control, you can delete temporary files directly. Press the Windows key and type %temp%, then press Enter. File Explorer will open to your Temp folder. Select all files here (Ctrl+A) and delete them (press Delete). Windows may say some files are in use — that's normal. Click Skip for those and delete the rest.

You can also navigate manually: open File Explorer, type C:\Users\[YourUsername]\AppData\Local\Temp in the address bar (replace [YourUsername] with your actual username), and delete the contents the same way. If you're not comfortable with File Explorer, the Settings method above is simpler and safer because it won't let you accidentally delete something important.

Clearing cache for specific apps

Some apps store their own cache separately from your browser and Windows temporary files. To clear an app's cache, open Settings and go to Apps > Apps & features. Find the app in the list and click it. Look for an Advanced options link or button. Scroll down to "Storage" and click Clear cache if that option appears.

Not all apps have this button — if you don't see it, the app doesn't have a user-accessible cache to clear. If an app is behaving strangely and doesn't have a clear cache option, you can uninstall and reinstall it, which will remove all its cached data. This is more drastic but often fixes persistent problems when nothing else works.

When to call for help

Clearing cache is safe and won't harm your computer. If you accidentally delete something you didn't mean to, the worst outcome is that a website loads slowly the first time you visit it, or an app takes a moment to start up. However, if your computer is running very slowly even after clearing cache, or if a program won't work at all, the problem may be something else — a virus, a failing hard drive, or a software conflict.

At that point, it's worth having a technician take a look. They can run diagnostics to find out what's actually slowing things down and fix it properly. Clearing cache is a good first step for minor slowness, but it's not a cure-all for every computer problem.

Frequently Asked Questions

Will clearing cache delete my passwords and saved logins?

Not unless you specifically check the box for "Cookies" or "Passwords" when clearing. Cache and cookies are different — cache is just images and files, while cookies store login information. Most browsers let you clear cache without touching cookies, so your passwords stay safe.

How often should I clear cache?

There's no set schedule. If your computer is running fine, you don't need to clear cache at all. Clear it when you notice slowness, when a website or app is behaving oddly, or when you're running low on storage space. Some people do it monthly as routine maintenance, but it's not required.

Why is my browser still slow after clearing cache?

Cache is usually not the main cause of slowness — too many browser tabs, outdated drivers, or a full hard drive are more common culprits. If clearing cache didn't help, try closing unused tabs, restarting your computer, or checking your disk space in Settings > System > Storage.

Can I clear cache without closing my browser?

Yes. You can clear cache while the browser is open using the steps above. The browser will rebuild its cache as you visit websites again. You don't need to close it first.

What's the difference between cache and cookies?

Cache stores images, scripts, and page layouts to make websites load faster. Cookies store small pieces of data like login information and preferences. They're separate, and most browsers let you clear one without the other.