Activate Windows when online activation doesn't work
Exchanging your Installation ID for a Confirmation ID through Microsoft's Product Activation Portal
Internet Interests
Last Update hace 10 días
When Windows can't activate over the internet, it can activate with a Confirmation ID. Windows gives you an Installation ID, Microsoft's Product Activation Portal turns it into a Confirmation ID, and you enter that on the PC. Microsoft moved telephone activation online on 3 December 2025, and it says offline activation is still supported.
Before you start, rule out the quick causes. A wrong date and time on the PC, or a network that blocks the activation service, both stop online activation, and Windows activation error codes covers them.
Get the Installation ID
In Windows, type SLUI 04 in the search box on the taskbar and select it from the results, or press Windows key + R, type slui 4 and select OK. Choose your country or region, and the window shows the Installation ID. Leave the window open.
The command line gives the same ID. Open Command Prompt as administrator and run this.
Get the Confirmation ID
- Open visualsupport.microsoft.com in a web browser. The short address aka.ms/aoh opens the same portal.
- Complete the CAPTCHA and select Proceed to Sign In.
- Sign in with a personal Microsoft account or a work or school account. Microsoft states that signing in "will not associate the account to the product license".
- Choose Activate a Microsoft Product, follow the prompts for Windows, and enter the Installation ID.
- The portal returns a Confirmation ID.
Enter the Confirmation ID
In the SLUI window, select the option to enter a Confirmation ID, type it in and select Activate.
From the command line, run this with the Confirmation ID in place of CONFIRMATIONID, typed with no spaces.
Then check Settings > System > Activation.
If the portal doesn't give you a Confirmation ID
Contact us with your order number, a screenshot of the Activation page, and the message the portal showed. Our contact details are in the help centre.