[Fix] Invalid Product Key Error – 3DMark

Invalid Product Key Error occurs in 3DMark when there is something wrong with its regedit keys. In this post, you’ll learn how to fix it quickly.

Fix 1: Delete 3DMark registry keys

Follow the steps below:

  • Close Steam.
  • Open Windows registry editor.
  • Navigate to HKEY_CURRENT_USER > Software > UL > 3DMark
  • Delete all keys that begin with “3DM”.
  • Now navigate to HKEY_CURRENT_USER > Software > Futuremark > 3DMark.
  • Delete “3DM” keys from this location too.
  • Restart your computer.
  • Launch 3DMark.

Invalid Product Key Error should be fixed now.

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