Software⏱️ 3 min read📅 2026-06-11

How to Fix: Windows share folder mount error: cifs filesystem not supported by the system

Error fixing cifs filesystem not supported by the system on Ubuntu

Quick Answer: Use the \ UNC\ path instead of //xxx.xxx.x.xxx/foldername, e.g. \UNC\xxx.xxx.x.xxx\foldername

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. ✨ Wrapping Up

The 'cifs filesystem not supported by the system' error occurs when attempting to mount a Windows share folder from an Ubuntu terminal. This issue affects users who need to access shared files and folders on their local network using their Ubuntu operating system.

This error can be frustrating, especially for users who rely on accessing their Windows shares regularly. Fortunately, there are several methods to resolve this issue and successfully mount the Windows share folder.

💡 Why You Are Getting This Error

  • The primary reason for this error is that CIFS (Common Internet File System) support has been deprecated in recent versions of Ubuntu. This means that the default configuration does not include CIFS support, leading to the 'not supported by the system' error.
  • An alternative reason could be that the Windows share folder is not accessible due to network configuration issues or firewall restrictions.

🚀 How to Resolve This Issue

Enabling CIFS Support using the 'cifs-utils' Package

  1. Step 1: Step 1: Update the package list by running the command 'sudo apt update'. This will ensure that you have access to the latest package versions.
  2. Step 2: Step 2: Install the necessary CIFS support package by running the command 'sudo apt install cifs-utils'. This may take a few minutes to complete.
  3. Step 3: Step 3: Re-run the original mount command with the updated CIFS support package installed. The corrected command should look like this: `sudo mount -t cifs //xxx.xxx.x.xxx/foldername /mnt/x -o user=username,sec=ntlmv2`

Using the 'smb4k' Package for CIFS Support

  1. Step 1: Step 1: Install the 'smb4k' package by running the command `sudo apt install smb4k`. This may take a few minutes to complete.
  2. Step 2: Step 2: Re-run the original mount command with the 'smb4k' package installed. The corrected command should look like this: `sudo mount -t smb4k //xxx.xxx.x.xxx/foldername /mnt/x -o user=username,sec=ntlmv2`

✨ Wrapping Up

To successfully mount your Windows share folder in Ubuntu, you can try enabling CIFS support using the 'cifs-utils' package or use the 'smb4k' package as an alternative. By following these steps, you should be able to access your shared files and folders without any issues.

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