If you're still getting errors after that, use ddu to completely uninstall your graphics drivers in safe mode, then install the latest game ready drivers from Nvidia or amd's website. You're going to want to download that driver before you start, then reboot into safe mode and run ddu. Unplug your network cable or disconnect from Wi-Fi. Have it completely remove your display drivers and automatically restart. After it restarts log back in and run your driver package before connecting to the internet (otherwise Windows update will download the generic drivers before you can run your installer). Don't use the driver provided by sapphire, evga, gigabyte, msi, etc. Get the driver directly from Nvidia or AMD, depending on your video card.

/r/ffxiv Thread Parent