Disk cleanup in Windows - Microsoft Support
Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.
Tips to free up drive space on your PC - Microsoft Support
The good news is you can probably free up a lot of space on your PC running Windows by following the tips here. But if you keep getting messages about low drive space, you might want to consider other options, including adding additional removable storage.
Free up drive space in Windows - Microsoft Support
Windows 10 may indicate that it needs more space to get the latest Windows 10 feature update. You can use an external storage device to help you complete the update. To learn more, see Free up space for Windows updates.
Tips to improve PC performance in Windows - Microsoft Support
This can help improve PC performance if you reduce the number of files that are synced to your PC. To see which version of Windows 10 your device is currently running, select the Start button, then select Settings > System > About. Open About settings. For more info on OneDrive Files On-Demand, see Learn about OneDrive Files On-Demand.
Free up drive space in Windows - Microsoft Support
If your Windows device is running low on storage, here are a few ways to free up some drive space.
Reset your PC - Microsoft Support
Resetting your PC in Windows is a powerful feature that allows you to restore your device to its original state, which can be useful whether you're experiencing performance issues, software problems, or simply want a fresh start.
Reinstall Windows with the installation media - Microsoft Support
You can reinstall Windows when you are signed in to Windows (in-place upgrade), or from the Windows Recovery Environment (clean install). Select the option that best suits your needs: In-place upgrade
How to remove malware or viruses from my Windows 10 PC
How to remove malware or viruses from my Windows 10 PC Applies To Windows 10 Microsoft Defender Antivirus and Windows Firewall are on your device to help protect it from viruses and other malicious software.
Create installation media for Windows - Microsoft Support
Installation media, such as a USB flash drive, can be used to install a new copy of Windows, perform a clean installation of Windows, or reinstall Windows. To create installation media, go to the software download website , where step-by-step instructions can be found.
Defragment / optimize your data drives in Windows
Learn how to use Manage and Optimize Drives to keep your disk and data drives defragmented and at top performance in Windows.