When upgrading to the next version of Windows if you receive error code 0xC7700112, it means that the upgrade assistant needs an update. The complete error message would say


Failure to complete writing data to the system drive, possibly due to write access failure on the hard disk.


You can resolve this by downloading the latest version of Upgrade Assistant or make sure the "Download and install updates (recommended)" is accepted at the start of the upgrade process. The later makes sure that the assistant is first updated so it can properly follow the steps to upgrade the copy of Windows.