Autodesk provides legitimate ways to access their software without these risks: How To Activate Autocad 2021?
Ensure you used 001M1 as the product key and that you are using a 2021-specific keygen. How To Use Xforce Keygen Autocad 2021
If you're not comfortable using Xforce Keygen Autocad 2021, there are alternative options available: Autodesk provides legitimate ways to access their software