Admin$ and IPC$ shares not working with IP

Question

Hello

Admin$ and IPC$ shares are not reachable when using an IP address:

`net use \\1.2.3.4\ipc$ /user:myusername mypassword`

but if I use the hostname or FQDN name it works.

If I break down the command and try:

net use \\1.2.3.4\ipc$
The password is invalid for \\1.2.3.4\ipc$.

Enter user name for '1.2.3.4': myusername
Enter the password for 1.2.3.4: mypassword
System error 1326 has occurred.

The user name or password is incorrect

if I use host name the command completes successfully.

Answer 1

May be something blocking NTLM
https://learn.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/network-security-lan-manager-authentication-level
https://learn.microsoft.com/en-us/windows/security/threat-protection/security-policy-settings/network-security-restrict-ntlm-ntlm-authentication-in-this-domain

--please don't forget to Accept as answer if the reply is helpful--

Answer 2

Hi，
Did you check if there are any logon events on the DCs and clients ?
I would recommend you check more details by capture a network package .
Best Regards,

Answer 3

Hi，
Based on the situation , i agree with DSPatric, would also suggest you check the NTLM related policy .(both the domain policy and the local policy )
Please note that we should check the policies on the client, server and the DC three sides.

Best Regards.