{"id":3981,"date":"2013-06-19T06:36:02","date_gmt":"2013-06-19T06:36:02","guid":{"rendered":"https:\/\/bodhost.com\/kb\/?p=3981"},"modified":"2026-02-26T14:04:32","modified_gmt":"2026-02-26T14:04:32","slug":"steps-to-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-servers","status":"publish","type":"post","link":"https:\/\/www.bodhost.com\/kb\/steps-to-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-servers\/","title":{"rendered":"Steps to Enable and Disable SMBv1, SMBv2, and SMBv3 in Windows Servers"},"content":{"rendered":"\r\n<p class=\"wp-block-paragraph\">The following post shows detailed steps to enable and disable the Server Message Block (SMB) versions SMBv1, SMBv2 &amp; SMBv3 on the SMB server and SMB client. The SMBv2 protocol was introduced in Windows Vista &amp; Windows Server 2008 and the SMBv3 was introduced in Windows 8 and <a href=\"https:\/\/www.bodhost.com\/managed-dedicated-servers\" target=\"_blank\" rel=\"noreferrer noopener\">Windows Server 2012<\/a>.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">The steps apply only to the following Windows versions:<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u2022\u00a0\u00a0 \u00a0Windows Vista Enterprise<br \/>\u2022\u00a0\u00a0 \u00a0Windows Vista Business<br \/>\u2022\u00a0\u00a0 \u00a0Windows Vista Home Basic<br \/>\u2022\u00a0\u00a0 \u00a0Windows Vista Home Premium<br \/>\u2022\u00a0\u00a0 \u00a0Windows Vista Ultimate<br \/>\u2022\u00a0\u00a0 \u00a0Windows 7 Enterprise<br \/>\u2022\u00a0\u00a0 \u00a0Windows 7 Home Basic<br \/>\u2022\u00a0\u00a0 \u00a0Windows 7 Home Premium<br \/>\u2022\u00a0\u00a0 \u00a0Windows 7 Professional<br \/>\u2022\u00a0\u00a0 \u00a0Windows 7 Ultimate<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 Datacenter<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 Enterprise<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 Standard<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 R2 Datacenter<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 R2 Enterprise<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2008 R2 Standard<br \/>\u2022\u00a0\u00a0 \u00a0Windows 8<br \/>\u2022\u00a0\u00a0 \u00a0Windows 8 Enterprise<br \/>\u2022\u00a0\u00a0 \u00a0Windows 8 Pro<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2012 Datacenter<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2012 Essentials<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2012 Foundation<br \/>\u2022\u00a0\u00a0 \u00a0Windows Server 2012 Standard<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Important to Note:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">It is recommended not to keep the SMBv2 or SMBv3 disabled. It should only be disabled for temporary troubleshooting. Keeping it disabled may deactivate various functions of the Windows server. The features which might get deactivated due to disabling SMBv2 &amp; SMBv3 are mentioned below:<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Disabling SMBv2 on Windows 7 &amp; Windows Server 2008 R2 will deactivate the below functions:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u2022\u00a0\u00a0 \u00a0Request compounding \u2013 it enables users to send multiple SMB 2 requests as a single network request<br \/>\u2022\u00a0\u00a0 \u00a0Larger reads and writes &#8211; better use of faster networks<br \/>\u2022\u00a0\u00a0 \u00a0Caching of folder and file properties &#8211; clients keep local copies of folders and files<br \/>\u2022\u00a0\u00a0 \u00a0Durable handles \u2013 when a temporary disconnection is there, it enables for connection to transparently rejoin to the server<br \/>\u2022\u00a0\u00a0 \u00a0Improved message signing &#8211; HMAC SHA-256 replaces MD5 as hashing algorithm<br \/>\u2022\u00a0\u00a0 \u00a0Improved scalability for file sharing \u2013 increases the no. <span id=\"f53c2d76-91dc-4210-9264-22e6b1473cca\" class=\"GINGER_SOFATWARE_mark\">of<\/span> users, shares, and open files per server<br \/>\u2022\u00a0\u00a0 \u00a0Support for symbolic links<br \/>\u2022\u00a0\u00a0 \u00a0Client <span id=\"b0d2a77e-2109-4f96-b706-ea0ef524b363\" class=\"GINGER_SOFATWARE_mark\">oplock<\/span> leasing model \u2013 it automatically limits the volume of data transferred between the client and server, resulting in improved performance on high-latency networks and increasing the scalability of SMB server<br \/>\u2022\u00a0\u00a0 \u00a0Large MTU support &#8211; for full use of 10-gigabyte (GB) Ethernet<br \/>\u2022\u00a0\u00a0 \u00a0Enhanced energy efficiency &#8211; clients that have open files to a server can sleep<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Disabling SMBv3 on Windows 8 &amp; Windows Server 2012 will deactivate the below as well as above mentioned functions:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u2022\u00a0\u00a0 \u00a0Transparent Failover \u2013 it enables clients to rejoin the cluster nodes during the maintenance or failover without any interruption<br \/>\u2022\u00a0\u00a0 \u00a0Scale Out \u2013 it allows concurrent access to shared data on all file cluster nodes<br \/>\u2022\u00a0\u00a0 \u00a0Multichannel &#8211; aggregation of network bandwidth and fault tolerance if multiple paths are available between client and server<br \/>\u2022\u00a0\u00a0 \u00a0SMB Direct \u2013 adds RDMA networking support for very high performance, with low latency and low CPU utilization<br \/>\u2022\u00a0\u00a0 \u00a0Encryption \u2013 offers end-to-end encryption and completely defends from snooping on untrustworthy networks<br \/>\u2022\u00a0\u00a0 \u00a0Directory Leasing \u2013 its caching functionality helps in improving the application response times in branch offices<br \/>\u2022\u00a0\u00a0 \u00a0Performance Optimizations &#8211; optimizations for small random read\/write I\/O<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Steps to Enable and Disable SMB Protocols on the SMB Server<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Microsoft Windows 8 and Windows Server 2012 have introduced a new <span id=\"9528bcf9-4f44-462a-b56b-a793a4adc0b9\" class=\"GINGER_SOFATWARE_mark\">cmdlet<\/span> [Set-SMBServerConfiguration] in the Windows PowerShell which allows you to enable and disable the SMBv1, SMBv2 &amp; SMBv3 protocols on the server. When you enable or disable the Server Message Block version 2 (SMBv2) in Windows 8 or in Windows Server 2012, automatically the SMBv3 is enabled or disabled, as the same stack is shared by the SMB protocols. Also, there is no need to restart your system once you run the Set-SMBServerConfiguration <span id=\"cf8c73c1-7973-453f-8251-5e22ef8c6976\" class=\"GINGER_SOFATWARE_mark\">cmdlet<\/span>.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Get the current state of the configuration of the SMB server protocol by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Get-SmbServerConfiguration | Select EnableSMB1Protocol, EnableSMB2Protocol<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv1 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-SmbServerConfiguration -EnableSMB1Protocol $false<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv2 and SMBv3 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-SmbServerConfiguration -EnableSMB2Protocol $false<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv1 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-SmbServerConfiguration -EnableSMB1Protocol $true<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv2 and SMBv3 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-SmbServerConfiguration -EnableSMB2Protocol $true<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Steps to Enable and Disable the SMB protocols on SMB Server <\/strong>running <strong>Windows 7, Windows Server 2008 R2, Windows Vista, or Windows Server 2008.<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Using the Windows PowerShell 2.0 or later version:<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv1 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-ItemProperty -Path &#8220;HKLM:\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters&#8221; SMB1 -Value 0 \u2013Force<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv2 and SMBv3 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-ItemProperty \u2013Path \u201cHKLM:\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters\u201d SMB2 \u2013Value 0 \u2013Force<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv1 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-ItemProperty \u2013Path \u201cHKLM:\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters\u201d SMB1 \u2013Value 1 \u2013Force<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv2 and SMBv3 on the SMB server by running the below command:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">Set-ItemProperty -Path &#8220;HKLM:\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters&#8221; SMB2 -Value 1 -Force<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Note that you need to restart your system after making changes to the SMB server.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Using Registry Editor:<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Important to Note:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u2022\u00a0\u00a0 \u00a0Before making any changes to the registry, make sure to back up it.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Steps to enable and disable the SMBv1 on the SMB server using the registry:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Registry <span id=\"9fd48204-f88c-461e-846c-a92880347436\" class=\"GINGER_SOFATWARE_mark\">subkey<\/span>:<br \/>HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters<br \/>Registry entry: SMB1<br \/>REG_DWORD: 0 = Disabled<br \/>REG_DWORD: 1 = Enabled<br \/>Default: 1 = Enabled<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Steps to enable and disable SMBv2 on the SMB server using the registry:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Registry <span id=\"77f8e229-845b-41c8-80e8-29f5ae0bcf49\" class=\"GINGER_SOFATWARE_mark\">subkey<\/span>:<br \/>HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\LanmanServer\\Parameters<br \/>Registry entry: SMB2<br \/>REG_DWORD: 0 = Disabled<br \/>REG_DWORD: 1 = Enabled<br \/>Default: 1 = Enabled<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Steps to Enable and Disable SMB protocols on the SMB client<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">The below steps apply to Windows Vista, Windows Server 2008, Windows 7, Windows Server 2008 R2, Windows 8, and Windows Server 2012.<\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv1 on the SMB client by running the below commands:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">sc.exe config <span id=\"ab8e967b-7b1b-4499-8a46-a7e9be3ebc99\" class=\"GINGER_SOFATWARE_mark\">lanmanworkstation<\/span> depend= <span id=\"934126a4-c494-4aca-acd7-8bec50a657c8\" class=\"GINGER_SOFATWARE_mark\">bowser<\/span>\/mrxsmb20\/<span id=\"4d1ca7ef-7dbd-4e25-80ed-0348e2a4c7bf\" class=\"GINGER_SOFATWARE_mark\">nsi<\/span><br \/>sc.exe config mrxsmb10 start= disabled<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv1 on the SMB client by running the below commands:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">sc.exe config <span id=\"69302e90-7c8e-43d6-b578-c015e197248f\" class=\"GINGER_SOFATWARE_mark\">lanmanworkstation<\/span> depend= <span id=\"67baa310-2823-48d2-9c44-10b0e8bb63fc\" class=\"GINGER_SOFATWARE_mark\">bowser<\/span>\/mrxsmb10\/mrxsmb20\/<span id=\"22270611-ac44-40db-9634-f286abf02102\" class=\"GINGER_SOFATWARE_mark\">nsi<\/span><br \/>sc.exe config mrxsmb10 start= auto<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Disables the SMBv2 and SMBv3 on the SMB client by running the below commands:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">sc.exe config <span id=\"5c477682-1e3a-4d66-9432-8adcbdb11b64\" class=\"GINGER_SOFATWARE_mark\">lanmanworkstation<\/span> depend= <span id=\"5018e31b-ea2b-4e0b-8bd6-23a049a784e5\" class=\"GINGER_SOFATWARE_mark\">bowser<\/span>\/mrxsmb10\/<span id=\"55feb134-ffc6-46e2-9b8f-4b05bd21003c\" class=\"GINGER_SOFATWARE_mark\">nsi<\/span><br \/>sc.exe config mrxsmb20 start= disabled<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enables the SMBv2 and SMBv3 on the SMB client by running the below commands:<\/p>\r\n\r\n\r\n\r\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\r\n<p class=\"wp-block-paragraph\">sc.exe config <span id=\"fbcf6d53-158d-48d7-8cac-2f113ccec77d\" class=\"GINGER_SOFATWARE_mark\">lanmanworkstation<\/span> depend= <span id=\"45d3187e-ba9b-4a44-b195-b2de28bfba48\" class=\"GINGER_SOFATWARE_mark\">bowser<\/span>\/mrxsmb10\/mrxsmb20\/<span id=\"38174dbf-29ed-4df8-9639-b25289f2bdaf\" class=\"GINGER_SOFATWARE_mark\">nsi<\/span><br \/>sc.exe config mrxsmb20 start= auto<\/p>\r\n<\/blockquote>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><strong>Important to Note:<\/strong><\/p>\r\n\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u2022\u00a0\u00a0 \u00a0The commands <span id=\"0836ef76-6a91-4703-a96c-aeb070316840\" class=\"GINGER_SOFATWARE_mark\">be<\/span> run at a raised command prompt.<br \/>\u2022\u00a0\u00a0 \u00a0The system must be restarted once you make these changes.<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>The following post shows detailed steps to enable and disable the Server Message Block (SMB) versions SMBv1, SMBv2 &amp; SMBv3 on the SMB server and SMB client. The SMBv2 protocol&hellip;<\/p>\n<p><a href=\"https:\/\/www.bodhost.com\/kb\/steps-to-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-servers\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[501,500,499,146,502],"class_list":["post-3981","post","type-post","status-publish","format-standard","hentry","category-dedicated-server-hosting","tag-smb-client","tag-smb-server","tag-smbv3","tag-windows-server-2008","tag-windows-server-2012"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Enable or Disable SMBv1, SMBv2, SMBv3 on Windows Servers<\/title>\n<meta name=\"description\" content=\"Steps to Enable and Disable SMBv1, SMBv2, and SMBv3 in Windows Servers\" \/>\n<meta name=\"robots\" content=\"index, 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