1. Use Disk Cleanup Tool:
Run Disk Cleanup to remove temporary files, system cache, thumbnails, and previous Windows installations.
- Type cleanmgr in Run (Win + R) → Select system drive → Choose files to delete.
2. Uninstall Unused Programs:
- Go to the Control Panel → Programs and Features and remove applications you no longer need.
3. Clear Temporary Files:
- Open Command Prompt as Administrator and run:
del /q/f/s %TEMP%\*
4. Remove Old Restore Points:
- Open System Protection → Click Configure → Choose Delete to remove old restore points.
5. Use Storage Sense:
- Go to Settings → System → Storage
- Enable Storage Sense to automatically delete unused files, temp files, and old downloads.
6. Move Files to External Drive or Cloud:
Transfer large personal files such as videos, images, or backups to an external drive or use OneDrive/Google Drive.
7. Extend Partition (Advanced):
Use Disk Management or third-party tools like MiniTool Partition Wizard to extend the system partition if unallocated space is available.
8. Free Up System Reserved Partition:
Use third-party partition tools cautiously to resize or clean up the System Reserved partition if required during upgrades.
9. Install Updates via External Media (Optional):
Create bootable media with the Windows Media Creation Tool and choose Custom Install to use external storage for installation files.
10. Contact Microsoft Support if Issue Persists:
If the error remains unresolved even after cleaning and resizing, reach out to Microsoft support for in-depth troubleshooting, especially for system upgrades or enterprise installations.