Acronis Storage Node can only run one cleanup task on a centralized managed vault at a time. As a result, the tasks queue

Canceling a task will stop it only after other running tasks are completed

Uncheck the "Compatibility mode" option for the executable to fix the issue.

Backup task status is displayed as "Queued" and never completes.

On one operating system regular file-level or disk-level backups and Microsoft Exchange Server backup tasks are always queued and performed one by one by the service_process.exe process.

The tasks cannot be run simultaneously.