No, within the first few minutes of the upgrade (after clicking ‘Install’), pre-flight checks will make sure AC power is connected, a wired network connection is connected, and VPN is not active. You will have the opportunity to remediate any of these checks if they’re not passing, or to abort the upgrade. Once pre-flights are passed and the upgrade continues, you should not disconnect your laptop from AC power or the wired network connection until the upgrade is fully completed. Doing so may cause a rollback to the previous version, or may cause some post-upgrade steps to fail to run. Please leave the PC connected on the UBC network until you are prompted with the “Windows 10 Update Complete - You can now log back into your machine” message.