[Fix] Invalid CD Key Error – Sword of the Stars Complete Collection

Sword of the Stars

In order to fix “Invalid CD Key” error in Sword of the Stars Complete Collection, do these;

Fix 1: Edit “42890_install.vdf” file manually

  • Copy your CD key.
  • Go to Sword of the Stars installation folder.
  • Look for “42890_install.vdf” file.
  • Edit it with any text editor (I prefer Notepad++).
  • Find “%cdkey%” and replace it with your CD key that copied before.
  • Open Windows registry editor (Win + R).
  • Navigate to HKEY_CURRENT_USER > Software > Valve
  • Look for “TestApp42890” and delete it.
  • Launch SOTS again.

Now you won’t see “Invalid CD key” error message again 🙂

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