Product Activation Solution Center

Key resources

Key resources

What is Microsoft Product Activation (MPA)?
Learn how product activation works.

How to tell if your product is properly licensed
Make sure that you have the right licensing for your Microsoft products.

Locate your Product Key sticker and learn its importance.
See examples of Certificate of Authority (COA) labels.

Activating Microsoft games and mapping programs
Frequently asked questions about Games for Windows, MapPoint, and Streets and Trips activation.

What is the difference between Product Activation and Product Registration?
You must activate your Microsoft product but you are not required to register your product, learn more about the differences.

Report Software Piracy
Reporting suspected violations of privacy when you encounter them can have a positive impact on the fight against piracy.


Microsoft Windows product activation

Get Help Activating Microsoft Windows
Learn how to activate Windows 8.1, Windows 8, Windows 7, Windows Vista and Windows XP

How to change or update your Product key
Steps to change your product key in Windows 7, Windows Vista and Windows XP.

"Your activation period has expired" error message in Windows Vista
Provides steps to resolve Windows Activation or Windows Genuine Advantage issues when your computer is in reduced functionality mode.

Reduced functionality mode in Windows Vista
Describes the behaviors you can expect when Windows Vista is in reduced functionality mode.


Microsoft Office product activation

Activate Office 365 Home, Personal, University, or Office 2013
How to activate Office 365 Home, Personal, University, or Office 2013

Activate Office 2010
How to activate Office 2010

Activate volume editions of Office
How to activate volume editions of Office

Office 2010 Product Key Guided Help
Use our guided help workflow to solve common problems with product activation and product keys. Common problems include identifying and entering your product key; errors when entering your product key and eligibility to get a replacement key.

Description of the Office Activation Wizard
Office includes an Activation Wizard. To fully use Office, you must activate Office.

Which button do I click to activate, purchase, download, or use an Office 2010 product?
This article helps you start using a Microsoft Office 2010 product if you have already bought Office 2010 and need to activate the product, want to buy Office 2010 or want to use Office Starter 2010.

Resources to help you activate a license in Microsoft Office 2007 and Office 2003 programs
Troubleshooting help and additional information about activation.

Volume license activation

Volume license activation

Volume Activation Information for Windows Vista, Windows Server 2008, Windows Server 2008 R2 and Windows 7
View resources about Volume Licensing and Volume Activation 2.0.

Volume License Product Keys
How to get Volume License Keys including KMS and MAK.

Activate volume editions of Office
How to activate volume editions of Office


Call us


Telephone numbers for Microsoft Product Activation Centers are not listed because there are many regional Product Activation Centers worldwide. The article How to contact a Microsoft Product Activation Center explains how to obtain the appropriate telephone number by running the Product Activation Wizard.

Ask the community

Contact your computer manufacturer

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Last Review : Wednesday, March 18, 2015