To understand why you need this file, you must first understand what it is.

Select your version of AutoCAD and choose or Browser Download .

If prompted for acad.msi , point it to the fresh download you obtained from the Autodesk portal. 4. Microsoft Program Install and Uninstall Troubleshooter

For those needing the .msi for network deployment:

Instead of searching for a direct download of a single file, you should retrieve the file from a trusted source. Here is the correct procedure: