Windows App Development Forums

Windows Phone MSDN forum (social.msdn.microsoft.com)

Windows Store MSDN forum (social.msdn.microsoft.com)

Stack Overflow – WindowsPhone (stackoverflow.com)

Stack Overflow – Windows Store Apps (stackoverflow.com)

GeekChamp forums (www.geekchamp.com)

WPCentral Forum (forums.wpcentral.com)

Reddit – WPDev (www.reddit.com)