GreyMatterOne

The quickest way to clear space in Windows is to run Microsoft’s built-in Disk Clean-up utility, or an alternative such as CCleaner Free, Microsoft’s Disk Clean-up utility can safely delete hidden system files. Click the button that says “Clean up system files” for the option to delete various files including “Previous Windows Installation(s)”. 

Next, go back to the Storage page and click on your C: drive. Windows 10 will scan your hard disk and tell you how much space you have free.  

Though the disk cleanup method basically deletes every insignificant junk files and help regain some disk space, you need a manual deletion of this update installation files, which will definitely release several GBs of storage for you. 

Step 1. In the search box in Windows 10, type cmd and Command Prompt should appear in the result. Right click on it and choose Run as administrator. 

Step 2. In the Command Prompt window, type the commands and press Enter after each: 

net stop wuauserv 
net stop bits 

Now follow the path C:\Windows\SoftwareDistribution. Open the SoftwareDistribution folder and delete everything inside, not including the folder itself. 

Step 4. Return to the Command Prompt, now type the other two commands and press Enter after each: 

net start wuauserv 
net start bits 

Finally, you can open File Explorer, right click on the C: drive, select properties, and check the box for disk compression. According to Microsoft when done (takes a while) that should reduce the disk space by 1.5GB (-x86) to 2.5GB (-64)

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