My Ubuntu 20.04 does not access the windows network (D-link NAS-320L Share center), the error is the following: Failed to mount the windows share: Connection termination caused by software.In previous distros everything was normal.

  • please, did you upgrade from Ubuntu 18 or just boot new Ubuntu sdk – Tawal Mc Apr 27 at 12:01
  • Eu usei numa partição nova, outras distros baseadas no Ubuntu 20.04 tem o mesmo problema! – Irio Benincá-Marcello Apr 28 at 13:21
  • I used it on a new partition, other distros based on Ubuntu 20.04 have the same problem! – Irio Benincá-Marcello Apr 28 at 13:21

I found this solution on internet.. By Tejas Lotlikar: Same issue here.

Since version 4, both Samba Server & Samba Clients do not allow an older level of protocols negotiation. You have to enable them in smb.conf file

Edit /etc/samba/smb.conf file (need root permissions)

in the [global] section, add the following line

client min protocol = NT1 Save the file and exit the editor.

You must restart the Samba Service for this change to take effect. In a terminal, enter this command:

sudo service smbd restart

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  • Thanks, I had the same issue and it actually worked! – Matteo May 13 at 18:01
  • Lifesaver - bueno! Why wasn't this added to the default in 20.04? Have they lost their minds? – Seamus Jun 29 at 8:35
  • This isn't the default because it is a security risk. Most modern Windows servers will require NT2 or 3. So this answer is not going to work for anyone on a corporate network. – Caleb McKay Jul 2 at 20:30

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