After downgrading from Data Center to Enterprise Edition, license does not match edition

[Colin]

That post (specifically my response here) provides some guidance for checking connections on Microsoft SQL Server. Is that the DB you’re using?

Why was the task been cancel?

I would recommend checking the connections being made to your database so see if there’s a rogue connection you don’t expect. For example, here’s how to do so for SQL Server.

You should be able to find more information about cancelled tasks in your ce.log

Troubleshooting