Well, rats. A new server erroring on a different file.
CBS file is found here.
Code:
Exec: Failed to pre-stage package: Package_1833_for_KB4516065~31bf3856ad364e35~amd64~~6.1.1.7, file: DWrite.dll, source: \\?\C:\Windows\SoftwareDistribution\Download\4ece833896edee59d9ff8e99436d089a\x86_microsoft-windows-directwrite_31bf3856ad364e35_7.1.7601.23807_none_c6ac992401aacefc\DWrite.dll, sandbox: (null) [HRESULT = 0x800f081f - CBS_E_SOURCE_MISSING]
CBS file is found here.