Software & AppsOperating SystemLinux

How To Fix Ubuntu 20.04 Not Accessing Windows Network

Ubuntu 20

In this article, we will delve into a common issue faced by many Ubuntu 20.04 users – not being able to access the Windows network. This problem often arises due to protocol negotiation issues between the Windows and Ubuntu systems. We will guide you through a step-by-step process to resolve this issue.

Quick Answer

To fix Ubuntu 20.04 not accessing the Windows network, you can enable older level protocols negotiation by editing the smb.conf file. Add the line "client min protocol = NT1" in the [global] section, save the file, and restart the Samba service. However, enabling the NT1 protocol may pose a security risk and may not work on corporate networks requiring newer protocols.

Understanding the Issue

When you try to access a Windows network on Ubuntu 20.04, you might encounter an error message stating “Failed to mount the windows share: Connection termination caused by software.” This error typically occurs due to the Samba service on Ubuntu not being able to negotiate the correct protocol with the Windows system.

The Solution: Enabling Older Level Protocols Negotiation

One possible solution to this problem is to enable older level protocols negotiation by editing the smb.conf file. The smb.conf file is the main configuration file for the Samba application which allows for interoperability between Linux/Unix servers and Windows-based clients.

Editing the smb.conf File

To edit the smb.conf file, you need to open the terminal. You can do this by pressing Ctrl + Alt + T on your keyboard. Once the terminal is open, enter the following command:

sudo nano /etc/samba/smb.conf

The sudo command allows you to run programs with the security privileges of another user (by default, the superuser). nano is a simple, user-friendly text editor in the Unix system. /etc/samba/smb.conf is the path to the configuration file we want to edit.

This command will open the smb.conf file in the nano text editor.

Adding the Protocol Line

In the smb.conf file, you need to find the [global] section. In this section, add the following line:

client min protocol = NT1

This line tells Samba to use NT1 as the minimum protocol for client communications. NT1 corresponds to the SMB1 protocol, which is an older version of the SMB protocol used by Windows for file and printer sharing.

After adding this line, you can save the file by pressing Ctrl + X, then Y to confirm the save, and finally Enter to exit.

Restarting the Samba Service

The final step is to restart the Samba service. This can be done by running the following command in the terminal:

sudo service smbd restart

The service command is used to run a System V init script, in this case, the Samba daemon (smbd). The restart parameter stops and then starts the service.

A Word of Caution

While this solution has been confirmed to work by some users, it’s important to note that enabling the NT1 protocol may pose a security risk, as it is an older and less secure protocol. Moreover, this solution may not work on corporate networks that require NT2 or NT3 protocols.

For more advanced configurations and troubleshooting, you may want to refer to the official Samba documentation.

In conclusion, accessing a Windows network from Ubuntu 20.04 can be a bit tricky, but with the right configurations, it is certainly achievable. We hope this guide has been helpful in resolving your issue.

What is the Samba service?

The Samba service is a software application that allows for interoperability between Linux/Unix servers and Windows-based clients. It enables file and printer sharing between these systems.

Why am I unable to access the Windows network on Ubuntu 20.04?

The inability to access the Windows network on Ubuntu 20.04 can be due to protocol negotiation issues between the Windows and Ubuntu systems. The Samba service on Ubuntu may not be able to negotiate the correct protocol with the Windows system, resulting in the error message "Failed to mount the windows share: Connection termination caused by software."

What does editing the smb.conf file do?

Editing the smb.conf file allows you to modify the configuration settings for the Samba service. In this case, we are adding a line to enable the use of the NT1 protocol, which is an older version of the SMB protocol used by Windows for file and printer sharing.

How do I open the terminal in Ubuntu 20.04?

To open the terminal in Ubuntu 20.04, you can press Ctrl + Alt + T on your keyboard. This keyboard shortcut will launch the terminal application.

Is enabling the NT1 protocol a security risk?

Enabling the NT1 protocol may pose a security risk as it is an older and less secure protocol. It is important to consider the potential vulnerabilities associated with using older protocols. If possible, it is recommended to use more secure protocols such as NT2 or NT3.

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