Windows will locate temporary files, Recycle Bin files, and error-related data that it can discard. Under the General tab, select Disk Cleanup. Head to File Explorer, then right-click on the C: drive, and click Properties. The simplest way to reclaim storage space in Windows is through Disk Cleanup. How to free up storage space for Windows 10 In any case, Windows will tell you how much additional space it needs when the “Windows needs more space” dialog appears. On some devices, such as Windows 10 tablets with only 16GB or 32GB of storage, Windows may perform a compressed installation. (To see which version you’re running, open the Control Panel, click on System, then look under the “System type” label.) According to Microsoft, the 32-bit (or x86) version of Windows 10 requires a total 16GB of free space, while the 64-bit version requires 20GB.
While the install files for Windows 10 take up just a few gigabytes, going through with the installation requires a lot more space.