Just updating my VBO Server to v4 and since around 2 hours the installation routine is saying: 'Starting Service: VBO Service'.
I'm seeing that there is much disk activity in C:\ProgramData\Veeam\Backup365\ConfigDB.
First, thanks for your interest in the new version, I hope that you'll enjoy it
It's good to know that you upgraded successfully, but nevertheless I'll pass your feedback on the duration to our DEV teams.