Pas mal d'info en anglais sur les bugs du launcher
We have several issues involving the ESO Launcher since Update 12 was released that we’re working on addressing, but want to provide some clarity and workarounds until these fixes are in place.
Server selection on launcher only says “The Elder Scrolls Online (NA)”
This is a known display error associated with the Update 12 patch that results in the ESO Launcher displaying "The Elder Scrolls Online (NA)" as your only server option. Please note that the launcher no longer indicates which Megaserver you are connecting to, and the option to choose your server is now found within the in-game login screen.
Can’t switch to EU megaserver
First, make sure you’re selecting the Live EU megaserver from the in-game login screen; it is no longer done from the Launcher. Once you select Live EU, it may take several minutes for the server selection to update. Wait until you see the MotD change to reference EU before you log into the game.
If you've tried the above and still can't connect to EU after waiting several minutes, try selecting Live, then switch back to Live-EU and wait until the MotD updates.
We've also heard from some players that logging into Live first, logging out, then selecting Live EU and logging in has a good success rate.
EU characters appear to be missing
Make sure you’re logging into the correct server by choosing your preferred server at the in-game login screen, then wait until you see the MotD change to reference EU. Logging in before this occurs will place you in the NA megaserver.
Realm Status icon is missing
This was temporarily removed since server selection is now done in-game, but we do plan on adding some sort of notification to the launcher in the future. In the meantime, you can check realm status through the MotD on the launcher and login screen, visiting the Service Alerts page, keeping an eye on the forums for updated banners, or following us on Twitter @TESOnline.
Computer reboots during patch download
This is due to an update for Microsoft Visual C++ 2015 Redistributable. Once this update is applied, your patch progress should continue. In the event you get stuck in a rebooting loop, you can visit Microsoft’s page to download the update manually.
Entire game (40GB) is being downloaded instead of just the patch (2.3GB)
EU players may find this is happening after the Launcher update is complete. Close the launcher. Navigate to where you have ESO installed on your machine, and open the “Launcher” directory. Open “launcher.settings” in Notepad (or any preferred document editor) and look for the “region”:”EU” entry. Change this to read “region”:”US”, and save the launcher.settings file. The launcher can now be reopened and the patch continued.
If “region” is already set to “US” in settings, then navigate to where you have ESO installed on your machine. If you see a newly-created folder titled “Elder Scrolls Online”, delete that. Then, rename your original folder titled “Elder Scrolls Online EU” to just “Elder Scrolls Online.” When you re-open the launcher, you will download the 2.3GB patch rather than the entire game.