Electron apps — Discord, Microsoft Teams, Slack, VS Code — are essentially Chromium browsers in disguise, and they cache like browsers do. Spotify runs a Chromium engine for its UI and caches album art. Zoom caches meeting logs and media. On a typical PC, these apps collectively eat 5–15 GB of cache, and none of them expose a "Clear Cache" button in their own settings.
This post is the cheat-sheet for getting that space back — both the manual way (Win+R, paste a path, delete) and the one-click way using the free RBS PC Cleaner.
Why Electron apps cache so much
Electron is the framework underneath most modern desktop chat apps. It bundles a full Chromium browser inside the app so the developers can write the UI in HTML and JavaScript. That decision saves them work but it means the app inherits all of Chromium's caching behaviour — disk cache for assets, GPU cache for rendered frames, IndexedDB for offline data, and so on.
Discord, for example, caches every emoji, sticker, custom server icon, and recent attachment you've ever seen. Teams caches every avatar, every chat thread's media, every shared file you opened. Multiply by months of usage and the totals add up fast.
None of this is harmful. Cache is supposed to be expendable. The problem is just that the apps don't garbage-collect aggressively, so the disk fills up while the app keeps running fine.
Signs your app cache is the problem
- Discord/Teams/Slack feels sluggish to open and you have months of message history.
- Your C: drive is mysteriously full and Windows Storage settings shows "Apps & features" or "Other" larger than expected.
- You haven't reinstalled or cleared cache in 6+ months.
- VS Code is taking 30+ seconds to start (cached extension data builds up).
Where each app's cache lives
If you want to clear them manually, here are the paths:
- Discord —
%APPDATA%\discord\Cache,Code Cache,GPUCache - Microsoft Teams —
%APPDATA%\Microsoft\Teams(several sub-folders namedCache,Blob_storage,databases,GPUCache,IndexedDB,Local Storage,tmp) - Spotify —
%LOCALAPPDATA%\Spotify\Storageand%LOCALAPPDATA%\Spotify\Data - VS Code —
%APPDATA%\Code\Cache,CachedData,Code Cache,GPUCache,logs - Slack —
%APPDATA%\Slack\Cache,Code Cache,GPUCache - Zoom —
%APPDATA%\Zoom(logs + cache)
What's safe to delete in these apps
Safe for all of them: Cache, Code Cache, GPUCache, tmp, logs. These are regenerated on next launch.
Avoid: Local Storage and IndexedDB — these contain actual app data. In Teams, deleting them signs you out and re-sync takes time. In VS Code, they store extension settings and workspace state.
One-click way: RBS PC Cleaner
RBS PC Cleaner's App Cache Cleaner page:
- Detects which of the 6 apps you have installed.
- Shows the exact MB used per app before you clear.
- Targets only the safe sub-folders (Cache, Code Cache, GPUCache, tmp, logs) — leaves Local Storage and IndexedDB alone.
- Skips files in use. Offers to close apps that are running.
- Reports how much was freed per app.
Free forever, open download from GitHub.
Other Electron apps worth checking
The same pattern applies to any Electron-based app — Notion, Figma Desktop, WhatsApp Desktop, Signal, Obsidian, Typora, etc. They all have Cache and GPUCache sub-folders that are safe to clear. The RBS PC Cleaner team is adding more to the detect list in future updates based on user feedback.
Manual step-by-step (any of the apps)
- Quit the app fully. "X" in the corner often just hides it to the system tray. Right-click the tray icon and choose Quit, or open Task Manager and end the process tree.
- Press Win + R to open the Run dialog.
- Paste the path for the app from the list above (e.g.
%APPDATA%\discord\Cache) and press Enter. - Select all (Ctrl+A) and delete (Shift+Del) to skip Recycle Bin. If Windows says some files are in use, you didn't fully quit the app — go back to step 1.
- Reopen the app. First launch will rebuild some cache, which is normal. The app will be a tiny bit slower for the first 30 seconds and then back to normal.
Typical space reclaimed
- Discord on a heavy-usage account: 2–5 GB
- Teams on an office laptop: 3–8 GB (worst offender, by a lot)
- Spotify: 500 MB – 2 GB
- VS Code: 200 MB – 1 GB
- Slack: 500 MB – 2 GB
- Zoom: 200 MB – 1 GB (mostly logs from past meetings)
How often should you clear?
Honest answer: you don't need to clear cache regularly. Cache exists for a reason — it makes things faster. The right time to clear is when one of these is true:
- Your disk is filling up and you need the space back today.
- The app is misbehaving (Discord won't load, Teams won't connect) and a cache clear is a standard troubleshooting step.
- You're about to back up your PC or transfer to a new machine and want to skip transferring cache files.
"Once a quarter" is a reasonable schedule for heavy users. Daily or weekly is overkill and will just make your apps slower without saving meaningful space.
Related articles
- Free Browser Cache Cleaner — Chrome, Edge, Firefox, Brave, Opera — same one-click approach for browsers.
- How to Clean Windows 11 Without Breaking It — the full safe-cleanup guide.
- Free Disk Space Analyzer for Windows — find where the rest of your space went.
- How to Free Up RAM on Windows 11 — Electron apps hog RAM too.
- RBS PC Cleaner v1.0.0 Launch — full feature list.
Free App Cache Cleaner for Windows
Discord · Teams · Spotify · VS Code · Slack · Zoom
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