Call 800 852 3543 for in-person technical product support.
PC Manufacturers' Contact Information
To learn more about Microsoft Signature Premium, set up a new account, activate your membership or get additional assistance, please visit http://signature.microsoft.com.
Information on Assure Extended Service Plans for Microsoft Signature PC, Windows Phone and Kindle
NOTE: Windows phones are currently sold only at Microsoft Store retail locations.
For support on Windows phones and devices purchased at Microsoft Store retail locations, please contact your phone mobile operator (for example, AT&T). They will be able to provide support on specific questions and to provide instructions on how to use and troubleshoot your Windows phone.
Mobile Operator Contact Information