A few things you can TRY that MIGHT fix the problem. First go into your task manager click on the tab that says processes. Look for the "launcher.exe" process and end it. Some times it gets stuck at this phase and endin the process and then launching can help.
2 right click the icon go to properties and click on the box that says run this program as an administrator. Sometimes that helps the launcher run better. Don't know why but it does.
3 make sure the game is in the excemption folder/tab for both your fire wall and your anti virus. Despite you having already played for a while they can clash with the launcher connecting to te Internet.
4 if none of this helps there is a thread about this on SWTOR.com forums that has more ideas how to take care of this. Unfortunately this is an on going problem for a lot of people
GT: Bull2855 Walk swiftly and carry a big gun (Space Marines)
Happened to me once yesterday after I got booted out too. All Isis once I got the message was reset my laptop and that did the trick. I would assume alt ctrl del would do the same. It probably just thinks the game is still running since u got booted from the game. Like I said tho all I did was reset and all was good Hope this helps
I used to get this a lot but havent had it for a while. For me going into task manager and killing it in the processes tab (not the application one) worked. Occaisionally I needed to stop the relevant host file from the previoulsy crashed swtor.exe (svchost) you can tell which one it was by putting it in order of memory used and picking the highest (assuming you weren't running an even bigger memory hog in the background at the same time)
Note, this probably won't actually stop the svchost process (windows was already dealing with it when it got confused by a new one opening for launcher) but an act of aggression towards it will bring it into line