What can block a file?

Question

Windows

Hello.
I've got a mysterious problem.
There is a server. User on the server. I connect via RDP.
In the same RDP through FAR I edit files. Text. cmd
and run them. Handles or through a sheduler.
From time to time FAR sticks like this:
https://s.mail.ru/Bi45/ZAwpomyCv
What could it be?
The last time the file was inaccessible for several minutes, and then disappeared altogether.
Admins shrug their shoulders and say that they say "there is nothing in the Kaspersky logs."
Q: Who can masquerade as process 4?
Could this be the consequences of the activation of the Kaspersky protection?

Answer 1

There is a feeling that this is windows scheduler.
Every time after the task is scheduled to run, the file is locked.
Then he lets go.