The error 0x80070070 – 0x50011 occurs during Microsoft Windows 10 installation when your computer doesn’t have sufficient free space on drive C to install the Windows 10 upgrade.
To resolve this issue you need to free up some space on drive C, and then run the upgrade again.
Windows 10 needs 20 GB of free space for the upgrade.
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.