Article ID: 950756 - View products that this article applies to.
When you try to activate a copy of Windows Vista or Windows 7 by using the Windows Activation wizard, you receive an error message that resembles the following:
An error has occurred
The Software Licensing Service reported that the product key is invalid
This problem occurs if the license validity interval has expired, or if the license is not signed correctly.
To resolve this problem, use one of the following methods:
Method 1: Re-insert the product key by using the "Change product key" toolTo re-insert the product key, follow these steps:
Method 2: Activate Windows by using the automated telephone systemTo activate Windows by telephone, you must use an automated telephone system.
To activate Windows by using the automated telephone system, follow these steps:
Method 3: Troubleshoot Volume Activation issuesFor more information about how to troubleshoot Volume Activation issues, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/938450/ )How to troubleshoot Volume Activation error codes on Windows Vista-based computers
To verify the Windows activation status, follow these steps:
(http://go.microsoft.com/fwlink/?LinkId=151500)for other considerations.
Article ID: 950756 - Last Review: September 28, 2012 - Revision: 1.0