Go to the autodesk authorization page - -
1. Enter the login from the account.
2. Enter your account password.
3. Go to the Account - Programs and Services section.
4. Select the desired product, its version and bit depth and click install.
5. The installation file will start downloading to your PC.
6. Run the installation.
7. After installation, run the installed application (Autocad).
8. The program will ask you to log in to your account. Enter your username and password.