Why am I prompted for a network password when password-protected access is disabled?

Question

Windows

There is PC A, a printer is connected to it, the printer is shared over the network.
When connecting to the above printer from another PC, it asks for a password, although it is disabled on the first one, in the advanced sharing settings.
In this case, PC B, when connected to computer A, requires a password to be entered (why, if password protection is disabled?), And PC C connects to computer A without a password.
The workgroup network, antivirus and firewall are disabled.
What to do?)

Answer 1

enable guest account