Windows 10 cleanup should focus on supported storage tools and personal files, not deleting unknown system folders. The OS is also beyond ordinary support.
Steps
- Open Settings > System > Storage and review Temporary files.
- Select only categories you understand; be especially careful with Downloads and Recycle Bin.
- Run Disk Cleanup for additional supported legacy cleanup categories where useful.
- Uninstall applications you no longer use through Settings > Apps.
- Move large personal archives to backed-up external/cloud storage if local space remains low.
How it works
Storage Sense can automate selected cleanup, but review its rules before enabling it. Do not manually erase WinSxS, installer caches, or Windows folders because they can be required for servicing/recovery.
Important considerations
Freeing disk space does not make unsupported Windows 10 secure. Plan migration to supported Windows hardware/software.
Practical guidance
Large Windows Update cleanup operations can take time and may require a restart. Let Windows’ own tools complete rather than deleting update folders mid-operation. If the drive is chronically full, identify large personal/app data with Storage categories; repeatedly clearing a few hundred MB of cache will not solve a capacity problem.
Additional details
Before deleting large folders manually, sort personal folders by size and confirm they are not application libraries or cloud-sync roots. Emptying Recycle Bin is irreversible through ordinary restore. A cleanup should leave enough headroom for Windows servicing and application updates, not merely get the disk a few megabytes below full.

Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.