I would not disable SMB2. The only reason would be the flat-file databases which Microsoft doesn't recommend to use in the future. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 12 years, 2 months ago. Active 9 years, 11 months ago.
Viewed 7k times. Improve this question. Alan B Alan B 5 5 silver badges 15 15 bronze badges. Just updating to say that the corruption issues mentioned above were solved with Server SP1 and Windows 7 SP1, therefore SMB2 should absolutely be left in the default enabled state on the server.
I dispute this - is there any supporting evidence? You should not trust the default out-of-box experience to still be in-place on devices, regardless.
Always verify and actively manage the settings and their desired state by using Group Policy or other management tools. Windows clients and servers require outbound SMB connections in order to apply group policy from domain controllers and for users and applications to access data on file servers, so care must be taken when creating firewall rules to prevent malicious lateral or internet connections. By default, there are no outbound blocks on a Windows client or server connecting to SMB shares, so you will have to create new blocking rules.
Note Small office and home office users, or mobile users who work in corporate trusted networks and then connect to their home networks, should use caution before they block the public outbound network. Doing this may prevent access to their local NAS devices or certain printers. You must not globally block outbound SMB traffic from computers to domain controllers or file servers.
You must use a security connection rule to implement the outbound firewall rule exceptions for the "Allow the connection if it is secure" and "Allow the connection to use null encapsulation" settings.
If you do not set this rule on all Windows-based and Windows Server-based computers, authentication will fail, and SMB will be blocked outbound. Requirements : Request authentication for inbound and outbound connections.
Authentication method : Computer and user Kerberos V5. For consumer or highly isolated, managed computers that do not require SMB at all, you can disable the Server or Workstation services.
When you stop and disable these services, SMB can no longer make outbound connections or receive inbound connections. You must not disable the Server service on domain controllers or file servers or no clients will be able to apply group policy or connect to their data anymore.
You must not disable the Workstation service on computers that are members of an Active Directory domain or they will no longer apply group policy. Need more help?
Expand your skills. Get new features first. Was this information helpful? Yes No. Thank you! By disabling the service the propagation of the virus will stop from spreading.
Please note: Before proceeding further it is strongly advised to take a backup of the machine because you will in some case might require to change the Windows Registry. If the steps are not carefully followed it might even crash the machine. Windows 10 users can disable the SMB feature by following these simple steps: 1. Upon clicking the option, the following screen will be prompted. Go to Start Menu, search for PowerShell. The very first result you will see is for PowerShell.
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