It is recommended to disable SMB version 1 since it is outdated and uses technology that is almost 30 years old. Says Microsoft, when you use SMB1, you lose key protections offered by later SMB protocol versions like: Pre-authentication Integrity (SMB 3.1. 1+) – Protects against security downgrade attacks.
How do I enable SMB1 on Windows 10?
Enable SMB1 on Windows 10
- Press Windows Key + R to bring up the run dialog and type: optionalfeatures.
- Expand “SMB 1.0/CIFS File Sharing Support” and then check the box next to “SMB 1.0/CIFS Client“
- Click OK.
- The installation will now proceed and you should be able to access shares using the SMB 1 Protocol again.
Why is SMB1 disabled?
Notably, SMB1 was used as an attack channel for both the WannaCry and NotPetya mass ransomware attacks in 2017. SMBv1 is so insecure that most security experts now recommend that administrators disable it entirely via a group policy update.
What happens when SMB1 is disabled?
Disabling SMBv1 without thoroughly testing for SMBv1 traffic in your environment can have unintended consequences, up to and including a complete suspension of all network services, denied access to all resources, and remote authentication failures (like LDAP).
Is SMB1 disabled by default?
Summary. In Windows 10 Fall Creators Update and Windows Server, version 1709 (RS3) and later versions, the Server Message Block version 1 (SMBv1) network protocol is no longer installed by default.
Does Windows 10 support SMB1?
File access and communication between devices and computer processes have been regulated by the network protocol SMB (Server Message Block) in Windows systems for decades. Current operating system editions like Windows 10, for example, still support SMBv1 – the first version of this standard.
Is SMBv1 enabled on Windows 10?
Windows 8.1 and Windows 10: Add or Remove Programs method
Under Control Panel Home, select Turn Windows features on or off to open the Windows Features box. In the Windows Features box, scroll down the list, clear the check box for SMB 1.0/CIFS File Sharing Support and select OK.
Should you disable SMB?
If you’re not using any of these applications—and you probably aren’t—you should disable SMBv1 on your Windows PC to help protect it from any future attacks on the vulnerable SMBv1 protocol. Even Microsoft recommends disabling this protocol unless you need it.
Is enabling SMB1 safe?
SMBv1 vulnerability is dangerous for larger networks. A modest home LAN should avoid SMBv1, but an old device disconnected from the internet cannot be used as an entry-point by an attacker. For more information, see : Microsoft’s advisory Stop using SMB1.
Should I disable SMB1 in Windows 10?
Microsoft recommends that you disable SMB1 for security reasons – and it is not more important to do so in view of the WannaCrypt or NotPetya ransomware epidemic.
What SMB version does Windows 10 use?
Currently, Windows 10 supports SMBv1, SMBv2, and SMBv3 as well. Different servers depending upon their configuration require a different version of SMB to get connected to a computer. But in case you are using Windows 8.1 or Windows 7, you can check if you have it enabled too.
Is SMB enabled by default in Windows 10?
SMB 3.1 is supported on Windows clients since Windows 10 and Windows Server 2016, it is by default enabled. For information on how to enable or disable SMB2.
What is SMB automatic removal?
Microsoft have started disabling SMB1 protocol for samba mounts. This means that any samba mounts that use SMB1 will not be accessible. … The feature that disables the SMB1 protocol is called the “SMB 1.0/CIFS Automatic Removal”. Once it has been installed in the Fall Creators update it will disable the SMB1.