Quote Originally Posted by Jeiko_Hunter View Post
System error 2146697208? cause that's what I'm getting and the two other FFXIV able PCs play it fine.
That usually gets triggered because the launcher is unable to load certain elements from the frontier website. We're seeing a lot of cases where certain SSL options are no longer enabled in the Internet Options because a fairly recent Windows UIpdate reset some of them. Run inetcpl.cpl from your Search/Run box to open the options snap-in, click the Advanced tab, then scroll to the bottom of the list. Make sure all the SSL and TLS options are enabled.

It has also been triggered by adblockers as well, in which case you could try adding an exception for the frontier.ffxiv.com site (Trusted/Allowed Sites/Connections sections and such, wording varies depending on the program).