There are two basic license agreements offered under the Microsoft Work Group Server Protocol Program (WSPP). Each of these two agreements is subject to further review and comment by the European Commission.
1. The Microsoft Work Group Server Protocol Program License Agreement for Development and Product Distribution ("WSPP Development Agreement") grants to licensees, on a royalty basis, certain of Microsoft European intellectual property rights for the purpose of interoperability with Microsoft client and server operating systems. Specifically, licensees will obtain the rights to use the licensed Microsoft technical documentation to develop implementations of the WSPP communications protocols for the available server tasks enabled by the WSPP protocols that the licensee selects. In particular, this Program makes available, under the license, the communications protocols implemented in Windows Server Operating Systems1 and that are used by a Windows Work Group Server2 to deliver file and print services and group and user administration services (including the Windows Domain Controller Services, Active Directory services, and Group Policy services) to Windows Work Group Networks3. Under the Program license terms, the technical documentation for these protocols, which will be provided to licensees through secured access, can be used in the development and distribution of work group server operating system products within the European Economic Area to accomplish one or both of the specific work group server tasks identified above. All licenses available under the Program require completion of the program entry requirements and payment of fees. As mentioned above, the terms of the WSPP Development Agreement are subject to revision upon comment by the European Commission.
2. An Evaluation Agreement is also available for companies that wish to review the technical documentation for potential license under a WSPP Development Agreement. Upon payment of the Evaluation Agreement license fee, a potential licensee is able to review, for up to two business days, the documentation offered under the WSPP Development Agreement. As mentioned above, the terms of the Evaluation Agreement are subject to revision upon comment by the European Commission.
For more information regarding the WSPP Development Agreement and/or the Evaluation Agreement, please contact the Microsoft Protocol Licensing team.
Microsoft Windows Version Without Windows Media Technologies
Microsoft will also comply with the European Commission direction to release a version of Microsoft Windows in Europe that does not include certain Windows multimedia technologies. Additional information will be made available in the near future, so please check this site again for details.
European Commission headquarters in Brussels 
In a move aimed to prevent fines stemming from its antitrust lawsuit filed by the European Commission (EC), Microsoft announced that it will be releasing portions of the source code to its Windows operating system. 

The EC ruled in March 2004 that Microsoft had abused its position in the low-end server and media player market, and required that Microsoft "disclose complete and accurate interface documentation which would allow non-Microsoft work group servers to achieve full interoperability with Windows PCs and servers".  Microsoft reacted by making available 12,000 pages of technical documentation and up to 500 hours of technical support, but the EC came to the conclusion that it was not enough.

Announcing that "we are putting our most valuable intellectual property on the table so we can put technical compliance issues to rest", Microsoft General Counsel Brad Smith asserted that Microsoft would be superseding the EC's requirements as a sign of good faith.  "While we are confident that we are presently in full compliance with the Decision, we wish to dispel any notion that Microsoft’s technical documents are insufficient", said Smith.
A Microsoft office at the Redmond Campus
The EC responded in a memo that it will study Microsoft's reply to the Statement of Objections once it receives the full details.  However, EC Competition Commissioner spokesman Jonathan Todd commented that "it would be premature to conclude access to the source code would resolve the problem of the lack of compliance with our decision."

A similar offer was made by Microsoft in August 2002 during its antitrust lawsuit filed by the United States Department of Justice and several states' Attorneys General.  The resulting "Microsoft Communications Protocols Program" had suffered continuous criticism regarding excessive cost, paperwork, and non-disclosure agreements.  It is unclear at this time if Microsoft's planned "Work Group Server Protocol Program" will suffer from the same issues if accepted by the EC.

Microsoft is expected to return to the EC courts in April.