![]() You can’t use the key on any more Windows systems. You also can’t use one that has already been used on another device.Īlso, while you can use some product keys on multiple devices, they only support a limited number of devices. You can’t enter the product key of a different Windows version. It is also possible that the product key you have entered is incorrect or invalid. If your Activation state says Active, you don’t need to do anything else.Open Run and enter ms-settings:activation.In such cases, you need to wait for some time and check if your system activates. If your system is already in the process of activation, entering the product key again will also show some error code, usually 0xC004E028. Click Sync now to synchronize to the time server.If it shows the wrong region for your time zone, disable the automatic time zone option and manually change your time zone.Enable the switches for Set time zone automatically and Set time automatically.Open Run and enter ms-settings:dateandtime.This issue will also show the error code 0x80072F8F on your activation page.įollow the instructions below to verify your date and time: So, their wrong settings also prevent the online activation service from verifying your product key. Your system can’t connect to the internet if your date and time settings are incorrect. You might also have to restart your router or modem. Run the Network Adapters troubleshooter as well.Select Internet Connections and click Run this troubleshooter or Run.Select Additional troubleshooters or Other troubleshooters.Type ms-settings:troubleshoot and press Enter.If not, run the network troubleshooter using these steps: Windows needs to connect to the online activation service to activate itself and verify the product key.įirst, check whether you can use the internet from your browsers. ![]() The first thing you should do is to check your internet connection. If this is not the case for your issue or waiting doesn’t resolve it, apply the possible solutions listed below. Sometimes, you might have to press the Activate key as well. It is possible that the activation servers are busy, so after a while, your system should automatically activate. How to Fix Microsoft Product Key Not Workingįirst, if you entered the product key after upgrading Windows or got the error message on the Activation Settings after upgrading a pre-licensed Windows OS, try waiting for some time. Improper modification of necessary system files.Making changes to the hardware components.Firewall blocking ports that the activation process uses.Code already used on the maximum number of devices.Using incorrect or invalid product keys.Here are the probable reasons for the Microsoft product key not working on Windows:
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