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[MS-SMB]: Server Message Block (SMB) Protocol

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

7/29/2024

52.0

Major

PDF | DOCX | Diff

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Previous Versions

Date

Protocol Revision

Revision Class

Downloads

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

Preview Versions

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A preview version of this document may be available on the Windows Protocols - Preview Documents page. After the preview period, the most current version of the document is available on this page.

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  • Technical Documentation. Microsoft publishes Open Specifications documentation (“this documentation”) for protocols, file formats, data portability, computer languages, and standards support. Additionally, overview documents cover inter-protocol relationships and interactions.

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