Find and delete duplicate files on windows 10 pc

[YatesCliffside]

I need to cleanup the computer and free up the storage as the internal ssd is quite limited. Only 30GB free space is available. It is a G4 Workstation with 512 GB SSD. The issue that the duplicate files mostly are images and audio files are saved across multiple partitions. Is there an effective way to let me quickly find and delete all duplicate files on my Windows 10 PC?

[Venom21 · Accepted solution]

Try these methods: 

Enable Storage Sense
Storage Sense automatically clears temp files, Recycle Bin items, and old Downloads without third-party apps.

1. Press Windows key, type "Storage settings," and select it (or go Settings > System > Storage).
2. Toggle "Storage Sense" on.
3. Click "Configure Storage Sense or run it now."
4. Set options: Delete temp files not used in 1 day; Recycle Bin after 30 days; Downloads after 60 days.
5. Click "Clean now" to run immediately, expect 5-15GB freed instantly.

Run Disk Cleanup with System Files

Disk Cleanup targets system junk, including previous Windows installations.

1. Press Windows key, type "Disk Cleanup," right-click, and select "Run as administrator."
2. Choose C: drive (your SSD), click OK.
3. Click "Clean up system files" (requires admin prompt).
4. Check boxes: Temporary files, Thumbnails, Recycle Bin, Delivery Optimization files.
5. Crucially, select "Previous Windows installation(s)" or "Windows.old", this can free 20-30GB from upgrades.
6. Click OK > Delete Files; wait 5-20 minutes.