Method 2: Using the Automated Telephone Systemįix error 0xC004F050 The Software Licensing Service reported that the product key is invalid Method 1: Re-insert the product keyġ.Click on Windows start button and then click on settings.Ģ.In the settings window, click on system.ģ.Next, click on About in the bottom right window.Ĥ.Now select “ Change product key or upgrade your edition of Windows.“ĥ.After that click on Change Product key.Ħ.In the Product key box, type the product key, and then click Next.ħ.Follow the onscreen instructions and Reboot your PC to complete the activation process.Fix error 0xC004F050 The Software Licensing Service reported that the product key is invalid.
