Safe to delete Windows10Upgrade at 11.0 GB?
I must free up hard drive space. What happens if I delete this folder? This Reddit thread has no definitive answer.
The Windows10Upgrade folder is created by Windows 10 Update Assistant. If your update is complete, you can safely delete this folder by uninstalling Windows 10 Update Assistant in Programs and Features.
Source: https://www.tenforums.com/tutorials/86213-how-delete-windows10upgrade-folder-windows-10-a.html