blocking planifcation every 5 days

Are the tasks actually executing? If they are scheduled to run less often than every 5 days, you can change the alert settings in machine options.

hello
this is not, in my view, a problem of managing alerts, because the backup does not execute, I am forced to change my job schedules so that the latter becomes operational

I still change the number of days in the management of alert

thank you

If you navigate to 'backup plans and tasks' page and select this plan, then 'run' button in the toolbar - are there tasks of this plan, like 'full backup' , etc ?

Not if I'm on the button I simply execute tasks simple validation
for example in copying screen we are July 23 and the next scheduled execution is arrested on July 22.

see attached file

sorry for the late reply

thank you

This looks like a conflict with an antivirus program. It was reported e.g. for Kaspersky - http://kb.acronis.com/content/11946 .
Try to add ACronis executables and data to antivirus exclusion as described in http://kb.acronis.com/content/36429

thank you very much, I use the KB and I come to you to inform you