The Protocols section provides detailed Open Specifications technical documents for certain protocols that are implemented in Windows client (including .NET Framework) and Windows Server (collectively published under Windows Protocols), Office, SharePoint Products and Technologies, Exchange Server, and Microsoft SQL Server and are used to communicate with other Microsoft software products.

Although the Open Specifications technical documents are freely available, many of them include patented inventions. Some of these patents are available at no charge under the Open Specifications Promise or the Microsoft Community Promise. The remaining patents are available through various licensing programs. For more information, please visit the Open Specifications Dev Center website or send an email message to the IP Licensing Team.

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These MSDN user forums are available to answer technical questions about the Open Specifications documents.
Open Specifications Blogs iconOpen Specifications Blogs

These blogs, authored by the engineers who support the Open Specifications documents, provide a different venue for further discussion of those documents.

Windows Protocols .zip file (500+ MB)

Microsoft Office Protocols .zip file (80+ MB)

SharePoint Products and Technologies Protocols .zip file (200+ MB)

Exchange Server Protocols .zip file (120+ MB)

Microsoft SQL Server Protocols .zip file (50+ MB)
Related Sections

Document Programs

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Computer Languages

Standards Support

Data Portability

Open Specifications Dev Center