My experimental network: 2 windows 7 PCs.
When using below commands trying to connect to PC2 (admin account with no password):
net use X: \\PC2\c$ /user:PC2\administrator
It will get:
System error 5 has occurred. Access is denied.
However, if set a password to PC2 admin account, and do below:
net use X: \\PC2\c$ /user:PC2\administrator mypwd
This will work.
Is it necessary to have the password set to enable windows file sharing?