Internal Server Error after Starting an Update
Problem After starting an update, an in-progress pop up page appears. During the update you receive the following error message: "Internal Server Error (HTTP request /maintenanceLock/unlock)."
Possible Cause The Administration Web application server receives an internal error that interrupted the update.
Solution Restart all your virtual machines gracefully by using Shut Down Guest on each virtual machine using the vSphere client. Then power on all virtual machines. Check that the Administration Dashboard shows that the version is updated. If so, your update was successful and you can take your system out of maintenance mode and continue. Otherwise, please contact technical support for further assistance.