Hello (I’m a french lost in english forums),
In a french topic there’s someone who has suggest to try this :
In Windows Console try to type : ‘ipconfig /flushdns’ and retry to loggon
original topic :
https://forum-fr.gw2archive.eu/forum/support/bugs/R-parer-l-erreur-1083-5-7-1595-101
Hope it will help you