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Windows Insider Program for Developers

Build even greater apps with the latest tools and resources.

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Explore Windows 10 SDK Insider Preview Builds

We regularly release pre-release versions of the Windows 10 software delivery kit (SDK) and mobile emulator to try out the latest Windows 10 Insider Previews1. You can also download detailed release notes for each, including details on new APIs, controls, issues, fixes and more.

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Share your feedback

Just like for our Windows Insider Preview, we’d like your feedback on our Windows Insider Preview SDKs and mobile emulators. Go to the Developer Forum to provide feedback and get updates. Go to Windows Platform Uservoice to submit new feature requests.

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Open a new feedback channel for your applications

The same Feedback Hub application that we use to collect feedback on Windows 10 can now be embedded into your own applications. This gives you a direct channel to Insiders and other users who submit feedback – for deeper insights and faster issue resolution.