Hello Tommy, you can't cancel the task from the Web UI. you can delete the job in the engine database connect to the engine database engine=# select * from job; to find the job_id it will be the one without an end_time select DeleteJob('job_id'); The other way is to restart the oVirt engine. Regards, Paul S. ________________________________ From: tommy <sz_cuitao(a)163.com&gt; Sent: 05 January 2021 04:10 To: 'users' <users(a)ovirt.org&gt; Subject: [ovirt-users] How to cancel a longtime running task on ovirt web interface ? Caution External Mail: Do not click any links or open any attachments unless you trust the sender and know that the content is safe. Hi, everyone: How to cancel a longtime running task on ovirt web interface ? Task looks can not be cancelled. [cid:image001.jpg@01D6E35B.BC8C78E0] To view the terms under which this email is distributed, please go to:- http://leedsbeckett.ac.uk/disclaimer/email/