Recently I am with a strange problem with the start of Unity 5.5.1 and 5.5.0.
The Unity takes 25 minutes to start, and have more than 7 erros with not specific.
I have the log file that the Unity creates at startup, look that.
Today, when i started the Unity, it’s saw that my machine identification is invalid for the current licence, but this time, the Unity start very fast, and seems to be normal.