That may seems odd but I can think of two reasonable things to confirm and look into...
1. During the process your license could of literally expired. For example if you were doing the updates in between the late night and very early morning of Midnight. With that said you should confirm that your license is "still good" or if an outstanding invoice for it has to be paid off.
2. Your IP could of changed for one reason or another. Verifies this and if it did run the re validation.
Other than that then yes that is very bizarre then.