There may be a workaround for players getting the "Certificate authentication failed" error. For this, you will go back to the previous launcher and prevent the launcher from updating to the current version.
Big caveat: This is, at most, a temporary fix. Once the certificates expire in October 2017, the old launcher will no longer work. Also, even before that, there will likely be a patch that renews the certificate on the swtor.exe process, and then you'll get the same error message when trying to start the game.
Make sure there is no launcher.exe process running; if there is, kill it in Task Manager.
Edit the "launcher.settings" file in your SWTOR folder, add the following line:
, "skip_self_patch": true
Download the old launcher here and extract all files into your SWTOR directory.
If you don't trust us, you can also use the old Launcher Repair Utility to restore the launcher to the previous version, but make a backup of your launcher.settings file beforehand because that tool will reset it.
Since we are not using Wine, we cannot test whether this works, so please let us know if it works for you.
If you are getting any issues or if the launcher is fixed, you can just delete the "skip_self_patch" line and the launcher should automatically update to the current version the next time you run it.
"Launcher is being updated. Please wait"
in General Discussion
Posted
That's what helped me on Vista 64.