[MS-SMB]: Server Message Block (SMB) Protocol (original) (raw)
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Specifies the Server Message Block (SMB) Protocol, which defines extensions to the existing Common Internet File System (CIFS) specification that have been implemented by Microsoft since the publication of the [CIFS] specification.
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Published Version
| Date | Protocol Revision | Revision Class | Downloads |
|---|---|---|---|
| 8/11/2025 | 54.0 | Major | PDF | DOCX |
Click here to download a zip file of all PDF files for Windows Protocols.
Previous Versions
| Date | Protocol Revision | Revision Class | Downloads | |
|---|---|---|---|---|
| 4/7/2025 | 53.0 | Major | PDF | DOCX | |
| 7/29/2024 | 52.0 | Major | PDF | DOCX | Diff |
| 7/8/2024 | 51.0 | Major | PDF | DOCX | Diff |
| 4/23/2024 | 50.0 | Major | PDF | DOCX | Diff |
| 2/26/2024 | 49.0 | None | PDF | DOCX | Diff |
| 6/25/2021 | 49.0 | Major | PDF | DOCX | Diff |
| 4/7/2021 | 48.0 | Major | PDF | DOCX | Diff |
| 9/12/2018 | 47.0 | Major | PDF | DOCX | Diff |
| 6/1/2017 | 46.0 | Major | PDF | DOCX | Diff |
| 7/14/2016 | 45.0 | Major | PDF | DOCX | Diff |
| 10/16/2015 | 44.0 | None | PDF | DOCX | |
| 6/30/2015 | 44.0 | Major | PDF | DOCX | |
| 5/15/2014 | 43.0 | Major | PDF | DOCX | |
| 2/13/2014 | 42.0 | Major | PDF | DOCX | |
| 11/14/2013 | 41.0 | Major | PDF | DOCX | |
| 8/8/2013 | 40.0 | Major | PDF | DOCX | |
| 1/31/2013 | 39.0 | Major | ||
| 10/25/2012 | 38.0 | Major | ||
| 7/12/2012 | 37.0 | Major | ||
| 3/30/2012 | 36.0 | Major | ||
| 12/16/2011 | 35.0 | Major | ||
| 9/23/2011 | 34.0 | Major | ||
| 6/17/2011 | 33.0 | Major | ||
| 5/6/2011 | 32.0 | Major | ||
| 3/25/2011 | 31.0 | Major | ||
| 2/11/2011 | 30.0 | Major | ||
| 1/7/2011 | 29.0 | Major | ||
| 11/19/2010 | 28.0 | Major | ||
| 10/8/2010 | 27.0 | Major | ||
| 8/27/2010 | 26.0 | Major | ||
| 7/16/2010 | 25.0 | Major | ||
| 6/4/2010 | 24.0 | Major | ||
| 4/23/2010 | 23.0 | Major | ||
| 3/12/2010 | 22.0 | Major | ||
| 1/29/2010 | 21.0 | Major | ||
| 12/18/2009 | 20.0 | Major | ||
| 11/6/2009 | 19.0 | Major | ||
| 9/25/2009 | 18.0 | Major | ||
| 8/14/2009 | 17.0 | Major | ||
| 7/2/2009 | 16.0 | Major | ||
| 5/22/2009 | 15.0 | Major | ||
| 4/10/2009 | 14.0 | Major | ||
| 2/27/2009 | 13.0 | Major | ||
| 1/16/2009 | 12.0 | Major | ||
| 12/5/2008 | 11.0 | Major | ||
| 10/24/2008 | 10.0 | Major | ||
| 8/29/2008 | 9.0 | Major | ||
| 7/25/2008 | 8.0 | Major | ||
| 6/20/2008 | 7.0 | Major | ||
| 5/16/2008 | 6.0 | Major | ||
| 3/14/2008 | 5.0.3 | Editorial | ||
| 1/25/2008 | 5.0.2 | Editorial | ||
| 11/30/2007 | 5.0.1 | Editorial | ||
| 10/23/2007 | 5.0 | Major | ||
| 9/28/2007 | 4.0 | Major | ||
| 8/10/2007 | 3.0 | Major | ||
| 7/20/2007 | 2.0 | Major | ||
| 7/3/2007 | 1.0 | Major | ||
| 4/3/2007 | 0.01 | New |
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