How to Enable SMB 1 on Windows 10 and Windows 11

The SMB 1 (Server Message Block) protocol allows devices on the same network to share files and other resources. Although this protocol is considered outdated and less secure, it can still be useful for connecting to older devices. By default, SMB 1 is disabled on Windows 10 and Windows 11, but it can be enabled manually. In this guide, we’ll walk you through the steps.

What is SMB 1 and Why Enable It?

SMB 1 is an early version of a network protocol that facilitates sharing files and printers over a local network. Windows now recommends using more secure versions of the SMB protocol, like SMB 2 or SMB 3, but in some cases, you may need to enable SMB 1 to support legacy devices such as old network drives or printers.

Steps to Enable SMB 1 on Windows 10 and Windows 11

Step 1: Open the "Windows Features" Menu

  1. Click on Start and type "Control Panel" to find and open it.
  2. Go to Programs, then select Turn Windows features on or off.

Step 2: Enable SMB 1.0/CIFS File Sharing Support

  1. In the "Windows Features" window, find SMB 1.0/CIFS File Sharing Support.
  2. Check the box next to this option to activate SMB 1.
  3. Click OK and wait for the installation to complete.

After installation, Windows may prompt you to restart your computer for the changes to take effect.

Step 3: Restart Your Device

If prompted, restart your computer. After rebooting, SMB 1 will be enabled, and you’ll be able to use it to connect to legacy devices.

Warning: Risks of Using SMB 1

SMB 1 has several known vulnerabilities, and using this protocol may increase the risk of attacks, especially if your computer is connected to a network with low security. It’s recommended to disable SMB 1 when it’s no longer needed and, if possible, explore alternative solutions using SMB 2 or SMB 3 for secure file sharing within your network.