Windows activation does not work when the sppsvc.exe process is not started automatically for a long time. This issue occurs because the Task Scheduler does not correctly trigger events including the rescheduling of events when the computer is started after an overdue task.

Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

This evolution ensures activation remains simple, flexible, and dependable while offering a modern, streamlined interface for all users. This article describes the Product Activation portal and explains how it supports activation for perpetual Microsoft products.

After linking your Microsoft account, run the Activation troubleshooter to reactivate Windows 10. This troubleshooter will only be available if your copy of Windows 10 (version 1607 or later) isn’t activated.

Sometimes when you run the Activation troubleshooter or try to activate, the error code and message will change. If the error code has changed, look up the new code below and follow the recommended steps.

Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.

Instead of calling the number, please visit Product Activation Portal and use the information from this screen to complete your activation attempt. If assisted support is needed to review your activation request, support options will be provided.

In this article, we will help you find your error code and suggest what you might try to correct the error. Follow the recommended resolutions for that error code. You may also click the specific error code to get more detail information. Note: This article doesn't contain all error codes generated by Device Manager.

Learn how to find a Windows product key for activation, and when you'll use a digital license instead.

You'll see this message if the retailer where you purchased Office didn’t activate the product key at the point of sale. The product key must be activated by the retailer before you can use it.