After a reboot (Windows 7) I can only use my Lightroom 6 (not CC) once. It will not launch again. This happened after I did an update. I can't even find id the program in my Windows Explorer. Al;so,, I go to the website and see that I have a license for the program but cannot load it again. Why not?
Do you get an error message when try to relaunch Lightroom?
By default you should be able to find the Program(Lightroom.exe) every time in the default location C:\Program Files\Adobe\Adobe Lightroom
Check if after closing the Program it keeps running in Task manager or not?
I experienced the same problem and advice from Adobe staff corrected it-
If Lightroom remains listed in Task Manager then try this procedure.