You can try using this tool to first remove all traces of Acrobat and Reader from your computer:
Then, you can download the full offline Reader installer from
After downloading, restart your computer and run the installer before doing anything else.
Thanks, Claudio. But I followed your instructions, and the problem persists.
The new Reader opens for a few seconds, then shuts down.
I have no idea what the problem is.
What is your operating system? What is your Reader version?