SMB Not Working in Windows 11: How to Fix It

If SMB is not working in Windows 11, you may be unable to access shared folders or network drives on other computers. SMB (Server Message Block) is a network protocol used for file and printer sharing between devices on the same network.

When SMB stops working, shared folders may not appear, network drives may fail to connect, or Windows may display access errors. This guide explains the most common causes and solutions to fix SMB not working in Windows 11.

What Is SMB in Windows?

SMB (Server Message Block) is a communication protocol that allows computers on a network to share files, folders, and printers.

Windows uses SMB for:

• File sharing across a local network
• Accessing shared drives
• Network printer connections
• Communication between Windows devices

If SMB services are disabled or misconfigured, network sharing may stop working.

Why SMB May Not Be Working in Windows 11

Several issues can prevent SMB from functioning correctly.

Common causes include:

• SMB feature disabled in Windows
• Network discovery turned off
• Incorrect sharing permissions
• Firewall blocking SMB traffic
• Outdated network drivers

Identifying the cause will help resolve the problem faster.

Enable Network Discovery and File Sharing

SMB relies on network discovery and file sharing settings.

Steps:

1. Open Control Panel.
2. Go to Network and Sharing Center.
3. Click Change advanced sharing settings.
4. Enable Turn on network discovery.
5. Enable Turn on file and printer sharing.

Save the changes and test the network connection again.

Enable SMB Feature in Windows

Sometimes the SMB feature may be disabled.

Steps:

1. Open Control Panel.
2. Click Programs.
3. Select Turn Windows features on or off.
4. Locate SMB 1.0/CIFS File Sharing Support.
5. Enable the feature if required.

Restart the computer after enabling it.

Note: Newer systems usually rely on SMB 2 or SMB 3.

Check Windows Services

Certain services must be running for SMB to work.

Steps:

1. Press Windows + R.
2. Type services.msc and press Enter.
3. Locate services such as:

• Server
• Workstation
• TCP/IP NetBIOS Helper

Ensure they are running.

Check Firewall Settings

Windows Firewall may block SMB communication.

Steps:

1. Open Windows Security.
2. Go to Firewall & network protection.
3. Click Allow an app through firewall.
4. Ensure File and Printer Sharing is enabled.

This allows SMB traffic on your network.

Update Network Drivers

Outdated network drivers may cause SMB connectivity issues.

Steps:

1. Open Device Manager.
2. Expand Network adapters.
3. Right-click your network device.
4. Select Update driver.

Restart the system after updating.

Restart the Network

Sometimes refreshing the network connection helps.

Steps:

1. Restart the router.
2. Restart your computer.
3. Reconnect to the network.

This can reset SMB communication.

Final Thoughts

If SMB is not working in Windows 11, the issue is usually related to disabled sharing settings, firewall restrictions, or network configuration problems. Enabling file sharing, checking SMB features, and updating network drivers often resolves the issue.

Once properly configured, SMB allows seamless file and printer sharing across devices on the same network.

FAQs

What does SMB do in Windows?

SMB allows computers to share files, folders, and printers across a network.

Why can’t I access shared folders in Windows 11?

Possible reasons include disabled network discovery, firewall restrictions, or incorrect permissions.

Should SMB 1.0 be enabled?

SMB 1.0 is outdated and generally not recommended unless required for legacy devices.

How do I enable file sharing in Windows 11?

Go to Network and Sharing Center and enable Network discovery and File and printer sharing.