I have a shared folder on a windows 10 host machine. I could access it from a windows 10 client machine, where I had set "remember credentials" when first accessing the share. I changed the password on the host. Now the client cannot access the shared folder. That was expected. But I could not find a way on the client to allow the user to re-establish access to the shared folder.
I expected it would ask for credentials again. However I got a network error saying that windows cannot access the host machine.
Based on a number of entries on various forums, I tried a few things. The credentials manager on the client does not show the host. I stopped and restarted file and printer sharing on the client, without any change in the result. Network diagnosis and the windows troubleshooter gave no help.
The problem was due to some previous connections remaining in the network table, even though disconnected, as presented by the "net use" command from the command prompt.
>net use
Status Local Remote Network
--------------------------------------------------------------------------
Disconnected \\192.168.1.71\IPC$ Microsoft Windows Network
Disconnected \\HOST\IPC$ Microsoft Windows Network
After deleting them (via "net use /delete") the next attempt to access the host asked for credentials. Yay!
I began the path to the solution when I tried
net use z: \\host\shared /user:admin password
which gave system error 1219 stating multiple connections to a server are not allowed. Disconnect all previous connections and try again. Obviously, even though known to be disconnected, the entries prevented reconnection.