If you're running Mac OS, see Install an older version of Adobe Reader on Mac OS.
Solid State Networks: Adobe licenses download technologies from Solid State Networks in Phoenix, Arizona. For more information on Solid State Networks and their products, click here.
Before you install, make sure that your system meets the minimum system requirements.
For quick troubleshooting steps, see Troubleshoot Acrobat Reader download.
For a list of known issues and more in-depth troubleshooting, see Troubleshoot Adobe Reader installation | Windows.
To see if other users are experiencing similar download and installation problems, visit the Reader user-to-user forum, or the Deployment & Installation forum on AcrobatUsers.com. Try posting your problem on the forums for interactive troubleshooting. When posting on forums, include your operating system and product version number.