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STEP-6:Now you have to confirm these 2 options :.STEP-5: Enter the Product key: 001M1 (for autocad 2021, For other products Product key is given below).STEP-3: Start Autocad 2021, Select Enter Serial Number.Run the AdskLicensing-installer.exe file to install Autodesk Licensing Service 9(Link given above).Go to the directory C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing and run the uninstall.exe file.Open Run, enter the following command and press Enter %COMMONPROGRAMFILES(x86)%\Autodesk Shared\AdskLicensing\uninstall.exeCOPY.Here we need to first uninstall the new licensed program and install the old version of the licensed program for activation. STEP-2: Autodesk 2021 uses a new Autodesk license for activation.
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