Storage space running out

The storage warning means the system volume no longer has enough free space for normal updates, temporary files, and application growth; deleting random Windows folders can make the installation unserviceable. Open Settings, System, Storage and review the category breakdown first. Use Cleanup recommendations and Storage Sense to remove temporary files, old Recycle Bin content, and downloads only after checking them. Run Disk Cleanup as administrator if Windows Update cleanup is offered. Move large personal files to another drive or cloud storage, and enable OneDrive Files On-Demand where appropriate. Uninstall applications or games that are no longer needed, and check whether restore points, virtual machines, mail archives, or log files are consuming unusual space. Do not manually delete WinSxS, Installer, or system-profile folders. After cleanup, run a Defender scan and verify free space again. If usage immediately grows back, identify the expanding folder before removing anything else.