Server 2008/Windows 7/Samba Unspecified error 80004005

Solution 1:

So the issue seems to have been that secpol was set to Digitally Sign Communications (Always).

To fix: Secpol.msc > Local Policies > Security Options > Microsoft network client: Digitally sign communications (always) => Disable



as the-wabbit said, it is better to update samba to handle the requirement rather than disable it so as to maintain security.

Solution 2:

Try to to enable only SMB 2 or 3 on server or just on windows client. In the registry set value on 1 for: AllowInsecureGuestAuth in key: HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\

Solution 3:

If the Samba server runs SMBv1, then new machines with Win10 have a problem, since they're missing the SMBv1 client function. To enable that function, follow this guide from

  1. Open Control Panel (the good old one, not the "touch" version)
  2. Click on Programs.
  3. Click on Turn Windows features on or off link.
  4. Expand the SMB 1.0/CIFS File Sharing Support option.
  5. Check the SMB 1.0/CIFS Client option.
  6. Click the OK button.
  7. Click the Restart now button (restart is really needed since it needs to install the function when turning off the computer)