How to Delete Cache From Your PC: A Complete Guide

Clearing your PC's cache is one of the most effective ways to recover storage space, fix sluggish performance, and resolve stubborn software glitches. But "cache" isn't one single thing — your computer stores several different types of cached data, each living in a different location and serving a different purpose. Knowing which ones to clear, and how, makes all the difference.

What Is Cache and Why Does It Build Up?

Cache is temporary data your system stores to speed things up. When your browser loads a website, it saves images and scripts locally so the page opens faster next time. When Windows runs applications, it stores frequently used files in memory and on disk so it doesn't have to retrieve them repeatedly. Over time, these files accumulate — sometimes reaching several gigabytes — even when the original content they referenced has changed or become irrelevant.

Cache itself isn't harmful by design. The problem arises when it becomes stale, oversized, or corrupted, which can cause slow load times, outdated content being displayed, or apps behaving unexpectedly.

The Main Types of Cache on a Windows PC

Understanding where cache lives helps you target the right areas:

Each of these behaves differently, and not all of them need to be cleared on the same schedule.

How to Clear Browser Cache

This is the most commonly needed cache clear and works similarly across major browsers. 🖥️

In Chrome or Edge:

1. Press Ctrl + Shift + Delete
2. Set the time range to "All time" for a full clear
3. Check Cached images and files
4. Click Clear data

In Firefox:

1. Press Ctrl + Shift + Delete
2. Select Cache from the list
3. Click Clear Now

Clearing browser cache fixes issues like pages loading outdated versions of sites, login loops, or broken page layouts. It does not delete your passwords or bookmarks unless you specifically select those options.

How to Clear Windows Temporary Files

Windows accumulates temp files from software installations, system updates, and app activity. These are safe to delete and often account for significant storage use.

Using Disk Cleanup:

1. Press Windows + S, type Disk Cleanup, and open it
2. Select your system drive (usually C:)
3. Check Temporary files, Temporary Internet Files, and any other categories you want
4. Click OK, then Delete Files

Using Settings (Windows 10/11):

1. Go to Settings > System > Storage
2. Click Temporary files
3. Review the list and select what to remove
4. Click Remove files

The Storage Sense feature in Windows 10 and 11 can automate this process, clearing temp files on a schedule you define.

How to Clear the DNS Cache

A corrupted or outdated DNS cache can cause websites to fail to load or resolve to incorrect addresses, even when your internet connection is working fine.

1. Press Windows + S and type cmd
2. Right-click Command Prompt and select Run as administrator
3. Type: ipconfig /flushdns
4. Press Enter

You'll see a confirmation message. This is quick, risk-free, and occasionally solves mysterious browsing issues without any other changes.

How to Clear the Thumbnail Cache

Windows generates preview thumbnails for images, videos, and documents. These can become mismatched or bloated over time.

1. Open Disk Cleanup (as described above)
2. Check Thumbnails in the list
3. Click OK to clear

Windows will regenerate thumbnails as needed — you won't lose any actual files.

How to Clear the Microsoft Store Cache

If Microsoft Store apps are failing to update or install, clearing the Store's cache often resolves it. 🔧

1. Press Windows + R to open Run
2. Type wsreset.exe and press Enter
3. A blank Command Prompt window will appear, then the Store will reopen automatically

Factors That Affect How Often You Should Clear Cache

There's no universal answer for cache-clearing frequency — it depends on several variables:

• How heavily you browse: Daily intensive web use fills browser cache much faster than occasional browsing
• Available storage space: On a PC with a small SSD (128GB or less), regular temp file clearing matters more
• Application load: Developers, creatives, or people running many background apps generate more temp file clutter
• System age and OS version: Older Windows installations and heavily used systems tend to accumulate more stale cache
• Stability of apps and browser: If you're experiencing specific bugs — slow load times, app crashes, display errors — targeted cache clearing is more diagnostic than routine
• Whether you use Storage Sense: If it's enabled and configured, Windows handles temp file cleanup automatically, reducing the need for manual intervention

For users running a modern SSD with Windows 11 and Storage Sense enabled, manual cache clearing may rarely be necessary. For someone on a budget laptop with limited storage running Windows 10, clearing temp files weekly might noticeably improve responsiveness.

The right approach depends entirely on how your specific system is configured, how you use it, and which symptoms — if any — you're trying to resolve.