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When I try to visit \\192.168.1.x on one of my computers I get the following error:

\\192.168.1.x is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.

The account is not authorized to log in from this station.

At first I thought it might be because the SMB server had hit the limit of concurrent connections but netstat just shows one "active connection".

Problem: The account is not authorized to login from this station suggests setting HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\LanmanServer\Parameters\enablesecuritysignature to 0 but it's already 0 and I'm still getting the error.

The laptop I'm trying to connect from (Windows 10) is one I use on multiple different networks FWIW. I use it at my job and I use it at my house. I'm also able to open the SMB share from other computers on my LAN (again Windows 10) - just not this dual use laptop.

The server is running Windows 7. The username on the laptop does not exist on the server but I wouldn't expect that to make a difference - what I'd expect to happen in this scenario is that the laptop would prompt me for a username / password that the server would accept but it's not doing that.

Any ideas?

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  • Do the server and the broken client perhaps have identical hostnames (computer names)? Is the laptop connected to MS Active Directory at your job? Jan 21, 2018 at 17:57
  • @grawity - the hostnames are different but the laptop is indeed connected to MS Active Directory at my job.
    – neubert
    Jan 21, 2018 at 18:11
  • The SMB server is configured to trust the AD domain? You are mounting the share volume as which user?
    – Ramhound
    Jan 21, 2018 at 18:39
  • @Ramhound - idk how to configure the SMB server to trust the AD domain. As for the user that's mounting the share volume... since it's not even prompting me for a username / password I guess it's trying to do the username / password of the user on the laptop. It used to prompt for auth info but now it doesn't anymore and I didn't change anything. Maybe some windows automatic update changed stuff...
    – neubert
    Jan 21, 2018 at 19:02
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    When you mount a volume you are given a chance to provide a username and password in the event, of let's say a Samba share or a Windows share, where the user profile you are using is not specifically given permission and a different user must be used. If this prompt is not being provide, then use the command prompt method, and specific the user and password instead. How you mount a SMB share with the command prompt is well documented.
    – Ramhound
    Jan 21, 2018 at 19:53

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