How to fix incorrect or invalid product key error when updating Windows 8 to 8.1

Microsoft has released Windows 8 with the metro UI two years later and it released an update called Windows 8.1 and allowed Windows 8 users to upgrade to the Windows 8.1 without any cost through the Windows store. This is only for the Windows 8.1 users, but other Windows versions users need to buy licence key to upgrade to Windows 8.1.

When Windows 8.1 is under development and when beta version has released, Microsoft has said that Windows 8.1 is an update for Windows 8, then the Windows 8 product key should work when installing Windows 8.1, but this is not true in most of the cases.

When Windows 8.1 RTM has released people installed it using the ISO files for the clean installation, but when they try to install they are getting the error that incorrect or invalid product key error even the product key is genuine. It looks like Microsoft did it intentionally, because it doesn’t want the users to update to Windows 8.1 from Windows 8 using ISO files, that’s they made it like not accepting the Windows 8 product keys when updating to Windows 8.1. Microsoft wants its users to update to Windows 8.1 through Windows store which doesn’t ask for the product key, but this doesn’t perform clean installation. Here we are going to provide the solution for this problem.

Windows-8.1-productkey

How to fix incorrect or invalid product key error when updating Windows 8 to 8.1

There are lot of solutions available for this problem and the best one is using the generic product key, which is a dummy key which can be used to install the Windows Operating System but this cannot activate the OS. These keys are legally provided by the Microsoft and they are available in the Microsoft website and inside the Windows setup folder.

Generate the generic product key for installing Windows 8.1 from here.

Enter the above generated product key in the Windows 8.1 installation wizard and it will accept with out any issue. After installing Windows 8.1 using the generic key, you can then activate it using the Windows 8 genuine product key by going to the system properties and clicking on the change product key option.

Though your Windows 8 doesn’t accepted at installation time, it is accepted when activating it. That’s it, your Windows 8.1 is activated successfully and doesn’t cause any issue in future.

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