Whether a customer is being supported during the Mainstream Support phase or the Extended Support phase, self-help online support is available throughout a product's lifecycle and for a minimum of 12 months after the product reaches the end of support. Microsoft online Knowledge Base articles, FAQs, troubleshooting tools, and other resources, are provided to help customers resolve common issues. Online self-help information is available through CustomerSource, our customer website for Microsoft Dynamics and related products. Customers must be current on a service plan to access the site.