How to Delete Cache on Windows: A Complete Guide

Clearing your cache is one of the most effective ways to fix sluggish performance, free up disk space, and resolve stubborn software glitches on a Windows PC. But "cache" isn't a single thing — Windows stores several different types of cached data, each in different locations, serving different purposes. Knowing which ones to clear, and how, makes the difference between a quick fix and wasted effort.

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 loads faster next time. When Windows updates, it keeps installation files in case it needs them. Apps store preferences, thumbnails, and session data for the same reason — to reduce load times.

Over time, this data accumulates. Some of it becomes outdated or corrupted. When that happens, cache can actually slow things down rather than speed them up, cause display errors, or consume gigabytes of disk space that would be better used elsewhere.

Windows doesn't automatically flush all of this. Some cache clears on restart; most of it doesn't.

Types of Cache on Windows and How to Delete Each One 🗂️

Temporary Files (System Cache)

This is the broadest category. Windows stores temporary files in two main locations:

• C:WindowsTemp — system-level temp files
• C:Users[YourName]AppDataLocalTemp — user-level temp files

To clear using Disk Cleanup:

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

To clear manually:

1. Press Windows + R, type %temp%, and press Enter
2. Select all files (Ctrl + A) and delete them
3. Skip any files that can't be deleted — they're currently in use

This is safe to do regularly. Deleting temp files does not remove personal data or installed programs.

Browser Cache

Every major browser — Chrome, Edge, Firefox, Opera — maintains its own cache separately from Windows. These files can grow to several gigabytes on active machines.

In Microsoft Edge:

• Press Ctrl + Shift + Delete
• Set time range to All time
• Check Cached images and files
• Click Clear now

In Chrome:

• Press Ctrl + Shift + Delete
• Same process as above

In Firefox:

• Press Ctrl + Shift + Delete
• Select Cache and your time range
• Click Clear Now

Clearing browser cache signs you out of nothing by default — unless you also check Cookies, which is a separate choice with different consequences.

DNS Cache

Windows stores a local record of recently visited domain names to speed up browsing. If a site has moved servers or you're seeing DNS-related errors, flushing the DNS cache often resolves it.

To flush DNS:

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

You'll see a confirmation message. This is instant, harmless, and one of the most underused fixes for connection issues.

Windows Update Cache

Windows stores downloaded update files even after they've been installed. These can accumulate to multiple gigabytes over time.

To clear:

1. Open Disk Cleanup as administrator (right-click the result and choose Run as administrator)
2. Click Clean up system files
3. Check Windows Update Cleanup
4. Click OK

Alternatively, you can stop the Windows Update service via Services (services.msc), navigate to C:WindowsSoftwareDistributionDownload, delete the contents, then restart the service. This is a more manual approach that achieves the same result.

Microsoft Store Cache

If Store apps are misbehaving, a corrupted Store cache is often the cause.

To reset it:

1. Press Windows + R, type wsreset.exe, and press Enter
2. A blank Command Prompt window will appear — wait for it to close automatically
3. The Microsoft Store will reopen with its cache cleared

Thumbnail Cache

Windows pre-renders thumbnails for images, videos, and documents to display them faster in File Explorer. When thumbnails look wrong or outdated, clearing this cache forces Windows to rebuild them.

To clear via Disk Cleanup:

1. Open Disk Cleanup
2. Check Thumbnails
3. Click OK

Thumbnails will regenerate automatically the next time you browse those folders. There's no data loss involved.

How Often Should You Clear Cache?

There's no universal answer — and that's where your specific situation matters. 🔍

A user on a low-storage laptop running many apps will benefit from clearing cache far more frequently than someone on a desktop with a 2TB SSD who uses a handful of programs. A developer or power user running multiple browsers and virtual environments generates cached data at a much higher rate than a casual user who mostly browses and streams.

The scale and frequency that makes sense depends on how much storage you have, how heavily you use the machine, and what symptoms — if any — you're actually experiencing. Clearing cache indiscriminately isn't always better than clearing it strategically, and the right approach looks different depending on what your system is actually doing.