I've been unable to download the patch files for today's patch. It started off downloading just fine, then some MB into the patch it stopped and gave me this error message. Now nothing downloads, skips straight to the error message after about 30 seconds or so.

Platform: PC
Type of connection: Wired
Other programs running while the game is attempting to patch: none
Error initially occured in the middle of the download, now occurs immediately

I've attempted all the standard items on various help pages
- Disabling antivirus and firewall
- Downloading through a VPN
- Changing the DNS server, using both the 8.8.8.8 and 4.2.2.2 servers
- ensured that the appropriate ports are open on my modem