You must contact Horizon Hobby or Knife Edge Software support. Provide your original serial numbers and explain that you upgraded your PC. They will reset your activation counter on their servers. Safely Upgrading to Newer RealFlight Versions

The authentication servers for RF6.5 were turned down in 2018. You must use the offline activation tool (call Horizon Hobby support at 1-877-504-0233).

If you own a legitimate copy and need to update your registration, follow this official process.

Even if you find a working "updated" serial for RF6.5, it will be what hackers call a "blacklisted key." You will be banned from the RealFlight multiplayer server (Swap Pages). You cannot download new aircraft or flying sites.

After the ransom was delivered, Cooper released the passengers in Seattle and ordered the plane to fly toward Mexico. Somewhere over southwestern Washington, he jumped out of the rear of the plane with the money. He was never found.

If you have lost your original packaging, you can still recover your updated or original serial numbers using the following methods: Check the Launcher (If Installed)