Hello,
If the CCTV camera can connect to a standalone Windows server using SMBv1 but cannot connect to a Windows server that is joined to an Active Directory domain, it suggests that there might be a domain-related configuration or policy that’s affecting the connection.
1、Check any domain-level policies that might be overriding local security settings. This could include group policies that disable SMBv1 or restrict access to network shares.
Computer Configuration\Policies\Windows Settings\Security Settings\Local Policies\Security Options
Computer Configuration\Policies\Administrative Templates\Network\Lanman Workstation
2、Local Security Policy: On the domain-joined server, run secpol.msc and check the Local Policies, specifically Security Options, to make sure that SMBv1 is not being restricted or required security settings are not preventing access.
3、Test SMBv1 Manually: On a separate computer, try to manually map the network share using SMBv1 to ensure that SMBv1 is indeed working as expected on the AD-joined server.
4、Disabel firewall and network inspection devices.
5、NTLM Authentication Level: Sometimes, the NTLM authentication level enforced by the domain can prevent SMBv1 connections. You can check this setting within the group policy editor under:
Computer Configuration\Policies\Windows Settings\Security Settings\Local Policies\Security Options
Network security: LAN Manager authentication level
If the issue still insists, also try to look at the System and Application logs, as well as the Security logs, in the Event Viewer for any events that correspond to the time of the failed connection attempts.
Best Regards,
Hania Lian
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