"Unable to update patch files." Is there anywhere I can manually get patch files?

[PondHollow]

I'm installing FFXIV on a fresh system.

I have a recurring problem where just before a ~500mb download of

ex1 - 2016.02.08.0000.0001

finishes, it stops and returns

Unable to update patch files.

[11006][20819][20890][19900][3]

SqPack:0x2-0x103-0.

After that, logging in immediately leads to the same error indefinitely unless I go and delete the incompletely downloaded content (it is in My Documents/Games/Fi...). In that case, the error only reappears once the said download is almost complete.

I've already tried a lot of suggestions to do things like restarting, running as an administrator, editing FFXIV_Boot.cfg, opening the ports, and I reinstalled Windows 10 (!), and the error doesn't budge; can this be worked around by manually finding the file and putting it in its place?