I've the following configuration (in a couple of customers):
n. 1 Windows 10 2004 version and n. 1 Windows 10 1909
Both of the client have the same user and password, administrators on both of the systems.
The folder on second client is shared to everyone (read/write).
Before the 1st client ugrade it could access to second client network share without be prompted for user/password.
After 2004 upgrade when the first client try to access to second (\\client2) is prompted to insert user and password. I insert the credentials and I can connect (and I save them).
After the reboot of client1 and I try again it ask again for credentials.
Even if I store the credentials in credentials manager after the reboot they aren't anymore in control panel.
Thanks and regards