I appreciate the suggestion about a thumb drive, but I don't think that is the issue. I do use them from time to time but not related to turbotax and I haven't used one in several weeks. I have opened TT a few times since the last time I used a thumb drive. This is directly related to when TT does a software update. It has happened 3-4 times since I installed the software and every time has been after a software update. It isn't every time that the software updates, but every time that I have been required to re-enter the license code it has been immediately after a software update.
Even if I were using a thumb drive, requiring the license code is not reasonable. A license code is something you enter once to prove it isn't pirated software.
