You can go into your game's install directory and delete only the following: client_highres_aux_2.datx A full Repair using the Options in the game launcher. If you were impacted by an issue on Wednesday evening and Thursday morning that is causing the following error message when trying to launch the game client: Here are some of the official responses to the issue.

Wednesday was that day, depending on Your time zone of course. Leading to corrupting files on the users end as well. It seems that it only affected those that tried to log in duing the time the change was still active on the servers. It seems it causes issues for some that can't use the easy fix but nothing short of total deletion of their LoTRO installs and completely fresh installs will solve. There were changes made leading up to the launch of the Legendary Servers, if related to the specific LS preparations or not I have no idea.

If anyone has a answer to this problem I would greatly appreciate them posting the solution. But still the launcher is failing to download from the server. Since I have 2 computers I also tried removing the 'PatchclientDLL' file form the corrupted computer and coping the file on the good computer and moving that one to the corrupted computer. I tried 2 possible solutions, the first was to go in and do a data repair, but the next day when this was finished the launcher still failed. On Wednesday when I click on my launcher it downloaded a file then instead of proceeding with getting a connection I got the following message: 'PatchClientDLL::CheckDatF iles Failed.

How to restart t launcher