Aerosoft CRJ Microsoft Flight Simulator X (FSX) is a professional-grade paid add-on, not a free product

The Aerosoft CRJ package also includes a range of additional features that enhance the overall experience. These include:

• Scenery complexity: medium–high
• Object/Autogen density: medium
• Traffic: reduce AI traffic if stuttering
• Use TAA off or on based on performance (TAA can be heavy)

If you do acquire the legitimate Aerosoft version, it offers a massive jump in quality over freeware:

The Verdict: Stop Searching, Start Flying

The search for "aerosoft crj fsx free" is a dead end. It leads only to malware, broken simulators, and frustrating flights. The file you are looking for does not exist without a credit card transaction or a piracy risk that is not worth taking for a decade-old flight simulator.

If you tell me whether you're looking for a free alternative or need help installing liveries for the Aerosoft version, I can provide specific links or guides.