Download and installation of this PC software is free and Adobe Reader XI has now been discontinued at end of life and no further updates are to be expected. It's only available acrobzt a bit download.
The benefits of running Adobe PDF Reader XI are negligible compared to many of the other options, so if you must, install this program. I uninstalled, ran the cleaner but the updater gave me a meta file error when attempting to reinstall. These are often available from the app store.
