Summary. Windows 10, version 2004 and 20H2 devices that have the January 2021 nonsecurity preview release, or a later version, installed might experience Windows activation failures containing error code 0xC004C003. Activation. Edition: < edition name >.

Symptoms. Windows activation or validation fails when you try to activate Windows operating systems over the Internet. Additionally, you may receive one or more of the following errors: Error code: 0x80004005 Description: License Activation (SLUI.exe) failed.

Fixes or workarounds for recent Office installation or activation issues. Excel 2021 Word 2021 Outlook 2021 PowerPoint 2021 More... Last updated: January 2024. The issues listed below reflect the issues caused by the most recent product updates. For more troubleshooting help, see Troubleshoot installing Office below.

Step 1: Sign in to Office with the right account. If Office asks you to sign in, enter the account you used to buy Office. You'll see "We couldn't find any Office products" if you use the wrong address. Try this: Sign in to Office. Step 2: Check for multiple copies of Office. You may not realize you have more than one copy installed.

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

Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. If you're unable to activate Windows 10, the Activation troubleshooter could help. To use the troubleshooter, select Start > Settings > Update & Security > Activation , and then select Troubleshoot .

Run the Windows 10 Activation Troubleshooter: select Start > Settings > Update & Security > Activation and then select Troubleshoot. Check if you have a paper copy of your Windows 25-character product key you can enter to activate Windows 10.

If you're having trouble activating Windows 11, follow these steps to fix activation errors: Confirm that your device is up to date and running Windows 11. In the search box on the taskbar, type winver, and then select Winver from the list of results. You'll see the version and build of Windows.

When you try to activate Windows 7 or Windows Vista, you may receive an error message that is accompanied by an error code and its description. This article will guide you through step-by-step methods to help you resolve your problem.

More information about this update. This update for Windows Activation Technologies helps detect validation errors and activation exploits. This update also detects any tampering attempts made to important Windows 7 system files. Be aware that some counterfeit copies of Windows include malware.