How to fix the problem of Installation of AutoCAD ?

Question: 

During installation Autocad 2010 (32-bit / 64-bit) it is showing that Autocad 2010 already installed, How to fix the problem?

Answer: 

if you are facing the problem during the installation it is showing that audocad 2010/2011/2012/2013/2015 ..... 2020 already installed then you have to check carefully control panel and go to  apps (see the bellow image), make sure all the apps are uninstall related to AtoCAD.

Go to your C drive program file and delete all the files of autocad folder, and then go to your taskbar click on the icon of ^ (arrow) right bottom side (See the image) right click on the autodesk manager apps icon (showing in rectangle black box) after right click you can see the option select the exit and then you can able to uninstall this app manger also from the control panel. 

after uninstallation of the autodesk apps manager you can install the autocad any version in your system. That's All

Thank you.