How to install a dll file

Hello there,
My name is Emma, Since a few days i am having trouble in opening an app with an error “amtlib.dll is missing”, My amtlib.dll download was done by a website mentioned but having trouble installing it as website did not have proper instructions about how to install a dll file, please help with the same.
Thanks in advance,

Hi Emma,

Did you try reinstalling the program?

There could be multiple reasons for a missing amtlib.dll. Error messages related to the amtlib.dll file can indicate that the file has been incorrectly installed, corrupted or removed. This could help answer your question though: Download amtlib.dll - Installing, and Registering amtlib.dll Location - ISORIVER
Good luck, let me know how it goes

will give it a try, thanks a lot