When cancelling a backup job, you find that the job remains stuck on cancel pending. When you attempt to restart
backup exec services, the services stop responding or stay stuck with status stopping.

If you come across a cancel pending job, try the below: (Please note, this will cancel all active jobs)

1) Open Symantec Backup Exec
2) Click Tools
3) Click Backup exec services
4) Click Restart all services
5) In most cases, you will find that bengine service hang. If this happens, access task manager and end the process bengine
6) The restart of services process will continue

That’s it