Microsoft Corp. may in the future be forced to lower its software prices as a result of the growth of open source, the company cautioned in its latest filing with the Securities and Exchange Commission.

In its latest 10-Q quarterly filing, Microsoft said that the popularization of the open-source movement continues to pose a significant challenge to its business model.

This threat includes "recent efforts by proponents of the open source model to convince governments worldwide to mandate the use of open source software in their purchase and deployment of software products.

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