Why did all Canon MFPs stop scanning to a network folder?

Question

Canon

1. All HP MFPs continue to work
2. Canon give error 0753, as if there is no network connection.
3. At the same time, the MFPs print normally
4. When setting up scanning to another server, everything works
5. Everyone has different networks and routers, only one server
6. There is a user with a password, under which the MFP climbs onto the ball to put the scan.
Pretty much everything points to a file server, except for running HPs.
The server was overloaded, the ball was recreated, the tambourine was beaten.

Answer 1

We figured out when the problem appeared and figured out that updates were then delivered to the server. Deleted it and everything worked.
Here is a list of what was removed, what specifically interfered did not begin to find out: