Specifies the Windows Search Protocol (WSP), which allows a client to communicate with a server hosting a Windows Search service (WSS) to issue queries.
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Published VersionDate
Protocol Revision
Revision Class
Downloads
3/10/2025
39.0
Major
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Previous VersionsDate
Protocol Revision
Revision Class
Downloads
9/16/2024
38.0
None
4/23/2024
38.0
Major
6/25/2021
37.0
Major
4/7/2021
36.0
Major
8/26/2020
35.0
Major
3/4/2020
34.0
Major
9/23/2019
33.0
Major
9/12/2018
32.0
Major
12/1/2017
31.0
None
9/15/2017
31.0
Major
6/1/2017
30.0
None
7/14/2016
30.0
Major
10/16/2015
29.0
Major
6/30/2015
28.0
Major
5/15/2014
27.0
None
2/13/2014
27.0
None
11/14/2013
27.0
None
8/8/2013
27.0
Major
1/31/2013
26.1
None
10/25/2012
26.1
None
7/12/2012
26.1
Minor
3/30/2012
26.0
None
12/16/2011
26.0
Major
9/23/2011
25.0
None
6/17/2011
25.0
Major
5/6/2011
24.0
Major
3/25/2011
23.0
None
2/11/2011
23.0
Major
1/7/2011
22.0
Major
11/19/2010
21.1
Minor
10/8/2010
21.0
None
8/27/2010
21.0
None
7/16/2010
21.0
Major
6/4/2010
20.0
Major
4/23/2010
19.0
Major
3/12/2010
18.0
Major
1/29/2010
17.0
Major
12/18/2009
16.0
Major
11/6/2009
15.0
Major
9/25/2009
14.0
Major
8/14/2009
13.0
Major
7/2/2009
12.0
Major
5/22/2009
11.0
Major
4/10/2009
10.0
Major
2/27/2009
9.0
Major
1/16/2009
8.0
Major
12/5/2008
7.0
Major
10/24/2008
6.0
Major
8/29/2008
5.0
Major
7/25/2008
4.0
Major
6/20/2008
3.0
Major
5/16/2008
2.1.2
Editorial
3/14/2008
2.1.1
Editorial
1/25/2008
2.1
Minor
11/30/2007
2.0
Major
10/23/2007
1.5.1
Editorial
9/28/2007
1.5
Minor
8/10/2007
1.4
Minor
7/20/2007
1.3.1
Editorial
7/3/2007
1.3
Minor
6/1/2007
1.2.1
Editorial
5/11/2007
1.2
Minor
4/3/2007
1.1
Minor
3/2/2007
1.0
Major
12/18/2006
0.1
New
Preview VersionsFrom time to time, Microsoft may publish a preview, or pre-release, version of an Open Specifications technical document for community review and feedback. To submit feedback for a preview version of a technical document, please follow any instructions specified for that document. If no instructions are indicated for the document, please provide feedback by using the Open Specification Forums.
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Copyrights. This documentation is covered by Microsoft copyrights. Regardless of any other terms that are contained in the terms of use for the Microsoft website that hosts this documentation, you can make copies of it in order to develop implementations of the technologies that are described in this documentation and can distribute portions of it in your implementations that use these technologies or in your documentation as necessary to properly document the implementation. You can also distribute in your implementation, with or without modification, any schemas, IDLs, or code samples that are included in the documentation. This permission also applies to any documents that are referenced in the Open Specifications documentation.
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Reservation of Rights. All other rights are reserved, and this notice does not grant any rights other than as specifically described above, whether by implication, estoppel, or otherwise.
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