If you stop this service, all the sharing will stop working, and other computers will not be able to access the resources you are sharing on your computer (including folders, printers, and default admin shares). The information about the LanmanServer service is stored in the following registry location:Ĭomputer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer Is it safe to disable the Lanman server service?Īs discussed above, the LanmanServer service is important for your computer to be able to host SMB shares. Viewing all the shares on your computer using PowerShell You can check the status of both services using the Get-Service Lanman* PowerShell command. Every Windows computer, whether it is running a server OS (like Server 2016 or Server 2019) or a client OS (like Windows 10 or Windows 11), has both the LanmanServer and LanmanWorkstation services. Understanding SMB protocol servicesĪs a client–server protocol, SMB requires a server service ( LanmanServer) and a client service ( LanmanWorkstation). Supports AES-256-GCM and AES-256-CCM encryption, SMB direct with encryption, Supports SMB over QUICĪs you can see in the table, Windows 11 and Windows Server 2022 still use the SMB 3.1.1 dialect which has few new features and security enhancements. Supports AES-128-GCM and AES-128-CCM encryption, supports directory caching, supports pre-authentication integrity checks to mitigate MITM attacks Performance improvements, ability to disable CIFS/SMB 1.0 for increased security Minor performance improvements, Opportunistic locking, Significant MTU supportĮnd-to-end encryption, SMB transparent failover, SMB direct, SMB multichannel, SMB scale out Reduced protocol chattiness, Supports the pipelining mechanism Supports larger files, direct transport over TCP/IP Extremely chatty, No encryption, Insecure
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