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Fixing Samba Windows Share Error: NT_STATUS_ACCESS_DENIED and Missing usershares

Ubuntu 12

When working with Samba, a popular software suite used for file and print services, you may encounter errors such as “NT_STATUS_ACCESS_DENIED” or missing usershares. These errors can prevent you from accessing shared resources on a network. In this article, we will guide you through a step-by-step process to resolve these issues.

Quick Answer

To fix the Samba Windows Share error "NT_STATUS_ACCESS_DENIED" and the issue of missing usershares, you can try reinstalling Samba, configuring the Samba settings correctly, creating the usershare directory if it’s missing, setting the correct permissions for the directory, restarting the Samba service, and connecting to the Samba share using the smbclient command. If these steps don’t resolve the issues, further troubleshooting may be required.

Understanding the Errors

Before we dive into the solutions, it’s important to understand what these errors mean:

  • NT_STATUS_ACCESS_DENIED: This error typically occurs when you’re trying to access a Samba share, but the server denies your request due to incorrect permissions or configurations.
  • Missing usershares: This error indicates that the system cannot find the specified usershare directory, usually located at /var/lib/samba/usershares/.

Prerequisites

Before starting, ensure that you have administrator access to the server where Samba is installed. You also need to have a basic understanding of Linux terminal commands.

Step 1: Reinstall Samba

The first step is to ensure that Samba is correctly installed. If there are any issues with the installation, it’s a good idea to purge the existing installation and reinstall it.

sudo apt-get purge samba
sudo apt-get install samba

The sudo command gives you superuser privileges, apt-get purge removes the software and its configuration files, and apt-get install installs the software.

Step 2: Configure Samba

Next, you need to check the Samba configuration file located at /etc/samba/smb.conf. This file contains all the settings related to Samba.

Add the following line under the [global] section:

netbios name = somethinglessthan15chars

The netbios name directive sets the NetBIOS name of the server, which should be less than 15 characters.

Step 3: Check for Missing usershares

If the usershare directory is missing, you can create it manually using the touch command:

sudo touch /var/lib/samba/usershares/public

The touch command creates a new file if it doesn’t exist.

Step 4: Set Correct Permissions

Setting the correct permissions for the usershare directory is crucial. You can set the permissions using the chmod command:

sudo chmod 777 /var/lib/samba/usershares/public

The chmod 777 command gives read, write, and execute permissions to all users.

Step 5: Restart Samba Service

After making these changes, you need to restart the Samba service for the changes to take effect:

sudo service smbd restart

The service command is used to run a System V init script, in this case, the smbd script which controls the Samba service.

Step 6: Connect to the Samba Share

Finally, try connecting to the Samba share using the smbclient command:

smbclient \\\\localhost\\public -U public

The smbclient command is a client that can ‘talk’ to a Samba server. It offers an interface similar to that of the ftp program.

If you’re still experiencing issues, check the Samba log file (/var/log/samba/log.%m) and the auth.log file for any error messages. These logs can provide valuable insights into what might be causing the problem.

Conclusion

In this article, we’ve covered how to fix the “NT_STATUS_ACCESS_DENIED” error and the missing usershares error in Samba. By following these steps, you should be able to resolve these issues and successfully connect to your Samba share. If you’re still having trouble, consider seeking help from the Samba community.

How can I check if Samba is installed on my system?

You can check if Samba is installed on your system by running the command dpkg -s samba. If Samba is installed, it will display information about the package. If it is not installed, it will show an error message.

How do I access the Samba configuration file?

The Samba configuration file is located at /etc/samba/smb.conf. You can access it using a text editor, such as nano or vi, by running the command sudo nano /etc/samba/smb.conf.

How do I restart the Samba service?

You can restart the Samba service by running the command sudo service smbd restart. This command will restart the Samba daemon and apply any changes made to the configuration file.

How can I check the Samba version installed on my system?

You can check the Samba version installed on your system by running the command smbd -V or samba -V. This will display the version information of the installed Samba package.

How can I view the Samba log file?

The Samba log file is located at /var/log/samba/log.%m, where %m represents the name of the client machine. You can view the log file by running the command sudo tail -f /var/log/samba/log.%m. This will display the contents of the log file in real-time.

How can I change the permissions of a Samba share?

To change the permissions of a Samba share, you can modify the valid users parameter in the Samba configuration file. This parameter specifies the users or groups that have access to the share. After making changes to the configuration file, remember to restart the Samba service for the changes to take effect.

How can I add a new user to Samba?

To add a new user to Samba, you can use the smbpasswd command. Run the command sudo smbpasswd -a username and provide a password for the user when prompted. This will add the user to the Samba password database.

How can I remove a user from Samba?

To remove a user from Samba, you can use the smbpasswd command with the -x option. Run the command sudo smbpasswd -x username, replacing username with the name of the user you want to remove. This will remove the user from the Samba password database.

How can I list the shared folders in Samba?

You can list the shared folders in Samba by running the command smbclient -L //localhost -U username, replacing username with a valid Samba username. This will display a list of shared folders on the local Samba server.

How can I set up a password-protected Samba share?

To set up a password-protected Samba share, you need to modify the Samba configuration file and add the desired share configuration. Within the share configuration, set the valid users parameter to specify the users or groups allowed access. After making the changes, restart the Samba service for the configuration to take effect.

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