The Windows AppData folder, at C:\Users\<you>\AppData, is the hidden folder where every installed app keeps its working data: game saves, Spotify offline downloads, your Chrome profile, mail attachments, and settings. A 20–100 GB AppData folder is normal on a PC you've used for a while. Don't delete the whole folder — but two parts are safe to clear by hand, and the rest you clean from inside each app.

TL;DR

  • AppData (C:\Users\<you>\AppData) holds the working state of every installed app.
  • Never delete the whole folder, or AppData\Roaming wholesale: you'll wipe saves and sign-ins.
  • It splits into Local (big caches), LocalLow (sandbox data), and Roaming (small settings).
  • Safe to delete: subfolders of apps you've already uninstalled, plus everything in AppData\Local\Temp.
  • For apps you still use, clear cache from inside the app, not by hand.

What is the AppData folder in Windows?

AppData is a hidden per-user folder that holds the data installed programs need to run: configuration, caches, databases, sign-in tokens, and saved content. It's hidden by default precisely because casual deletion breaks things. To see it, open File Explorer, type %appdata% in the address bar (that opens Roaming), or %localappdata% for the Local subfolder. The folder grows naturally as you install apps and use them, so a large AppData isn't a problem, it's expected.

Local vs LocalLow vs Roaming: what's the difference?

Three subfolders live under AppData, each with a distinct job:

Subfolder What it holds Typical size
AppData\Local Heavy machine-specific data: game saves, Spotify/Discord caches, browser history, email attachments Largest, often most of AppData
AppData\LocalLow Low-integrity sandbox data from restricted processes like browser plugins Small
AppData\Roaming Small settings and profiles meant to follow you across a network: preferences, dictionaries, license tokens Small to moderate

Local is almost always the one worth investigating, because that's where multi-gigabyte caches accumulate. Two folders inside it come up constantly:

  • AppData\Local\Temp — scratch files Windows and apps leave behind. Always safe to empty; Windows recreates it.
  • AppData\Local\Packages — the per-app data for Microsoft Store / UWP apps (Xbox, Photos, WhatsApp from the Store, etc.). This one is not safe to delete wholesale: wiping a subfolder here resets that Store app's settings and sign-in. Clear those apps from their own settings instead, and only delete Packages subfolders for Store apps you've already uninstalled.

How do I clean up the AppData folder safely?

Work carefully and target only what you know is safe:

  1. Press Windows + R, type %localappdata%, press Enter.
  2. Switch to View › Details, then click the Size column to sort, or right-click suspicious folders and choose Properties to check size.
  3. Identify folders named after apps you've already uninstalled (old games, removed software) and delete those to the Recycle Bin.
  4. For apps you still use, clear cache from inside the app (its settings), never by deleting the folder by hand.
  5. Press Windows + R, type %temp%, press Enter.
  6. Select all, press Delete, and skip any locked files that won't delete.

Don't go further than this. The contents of Temp and abandoned-app folders are genuinely disposable; everything else may be live app state.

Is it safe to delete the AppData folder?

No, not as a whole. Deleting AppData itself, or AppData\Roaming wholesale, will sign you out of everything, wipe game saves, and can corrupt local app databases. What is safe: emptying AppData\Local\Temp (Windows recreates it), and removing subfolders belonging to apps you've fully uninstalled. Everything else is the current working state of software you use. When in doubt, leave a folder alone or clear that app's cache through its own settings, which only removes data the app can rebuild.

Where to go next for Windows cleanup

If AppData wasn't the main culprit, the weight is usually elsewhere on the C drive. For a native, no-download approach, read deep cleaning Windows 11 and 10 without third-party utilities. To pinpoint the largest folders visually, see what TreeSize Free is and how to use it. For specific space hogs, check how to safely empty the Downloads folder on PC, how to uninstall heavy PC games properly, and why OneDrive takes up local hard drive space.

Related: what actually fills up phone storage in 2026 · the apps people blame for full storage

FAQ

Can I delete the AppData folder to free up space?

No. Deleting the entire AppData folder wipes every app's settings, sign-ins, and saved data, and can corrupt local databases. Only delete the Temp subfolder and folders belonging to apps you've already uninstalled.

Why is my AppData folder so big?

AppData grows because apps store caches and downloaded content there, especially in AppData\Local. Game saves, Spotify offline music, browser profiles, and messenger caches are common reasons it reaches 50 GB or more.

Is it safe to delete AppData\Local\Temp?

Yes. Everything in AppData\Local\Temp is temporary data Windows and apps recreate automatically. Delete its contents and skip any files that are locked because they're currently in use.

What's the difference between Local and Roaming in AppData?

Local holds heavy, machine-specific data like caches and game saves, while Roaming holds small settings meant to follow your account across networked PCs. Local is almost always the larger of the two.

Can I delete the Packages folder in AppData\Local?

Not as a whole — AppData\Local\Packages holds the live data, settings, and sign-ins for your Microsoft Store apps, so deleting it resets them. It's only safe to delete the subfolders belonging to Store apps you've already uninstalled. For apps you still use, clear their cache from inside the app or from Settings › Apps › [app] › Advanced options › Reset.

For phones, Cleanor does this kind of safe, local cleanup automatically, scanning and clearing recoverable clutter with nothing uploaded. See how Cleanor frees up storage or get the Cleanor app.