App cache cleanup rule
Use each app's own cleanup, storage, or move feature when available. Avoid deleting profile folders manually, because a folder named cache can sit next to passwords, projects, downloads, extensions, or synced files.
| App cache type | Usually safe? | Better first action |
|---|---|---|
| Browser cached images and files | Usually yes | Use browser settings. |
| Teams cache | Usually yes after quitting Teams | Close Teams first. |
| Adobe media cache | Often yes, but review project context | Use Adobe app preferences. |
| Steam library content | No, not as cache | Move or uninstall through Steam. |
| OneDrive local files | Do not delete blindly | Use Free up space. |
Browser cache
Chrome Cache
Clear cached files without losing bookmarks.
Edge Cache
Reduce Microsoft Edge cache safely.
Firefox Cache
Clear cache while keeping profiles intact.
Games, media, and creative apps
Steam Disk Space
Move games and review workshop content.
Adobe Cache
Media cache, scratch disks, and previews.
Large Video Files
Find recordings, exports, and source media.
Sync and communication apps
OneDrive
Free local copies without deleting cloud files.
Teams Cache
Clear Teams cache after quitting the app.
Outlook OST
Mailbox cache and local email storage.
Developer and device storage
Docker and WSL
Images, containers, distributions, and virtual disks.
Virtual Machines
VHD, VDI, VMDK, snapshots, and checkpoints.
iPhone Backups
Find old local device backups on Windows.
FAQ
What is app cache?
App cache is data saved by applications to make repeated actions faster, such as loading web pages, thumbnails, previews, messages, game assets, or media files.
Can app cache fill the C drive?
Yes. Browser cache, Teams cache, Adobe media cache, Steam downloads, Docker/WSL files, and synced cloud files can all make the C drive look full.
Should I delete app cache manually?
Use the app's own cleanup controls first. Manual deletion is safest only when you know the folder is truly cache and the app is closed.