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How to activate an AIDA64 Engineer for Windows key?

Redeeming an AIDA64 Engineer for Windows key is really simple, just follow these steps: 

  1. Download the software client from this site: LINK
  2. Activate the key.

The key is not working 

If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions: