When an upgrade fails to install we just get a mail from Microsoft stating the following:

"Dynamics 365 Business Central
Your Business Central was not updated
Business Central was not updated on your scheduled date and time. We apologize and have rescheduled your update for seven days from now. You will receive another notification with the rescheduled date and time. If the scheduled date or time is inconvenient for your business, you can easily reschedule the update."

We don't receive a specific reason why this fails, so we cannot take any action to change this error.

To figure out the error we need to contact our Distributor and raise a case. Then the distributor reads the error and case created and then they need to contact us and after that contact, they need to create a support case at Microsoft.

After these steps Microsoft sends us the specific error report which explains why the upgrade is failing.

Suggestion/Idea: We could all save a lot of time getting the error message directly send to the Notification Recipients in the Admin Center and not go through the long road to the Microsoft Support through the Distributor support.