You need Windows 7 or later to run Acrobat Reader DC. If your operating system is older,you can install an earlier version of Reader. For step-by-step instructions, see Install an older version of nasaconstellation.com Reader | Windows.
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If you"re not sure which version of Windows you have, see Which Windows operating system am I running?
Acrobat Reader DC installation is a two-part process: The installer is downloaded, and then Reader is installed. Be sure to wait until both parts are complete. A progress bar displays the time remaining.
Press Ctrl+J to open the download Library. When the download Library window appears, double-click the .exe file for Reader.
Acrobat Reader DC installation is a two-part process: The installer is downloaded, and then Reader is installed. Be sure to wait until both parts are complete. A progress bar displays the time remaining.
When the downloaded file appears at the bottom of the browser window, click the .exe file for Reader.
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Acrobat Reader DC installation is a two-part process: The installer is downloaded, and then Reader is installed. Be sure to wait until both parts are complete. A progress bar displays the time remaining.
For a list of known issues and more in-depth troubleshooting, see Troubleshoot nasaconstellation.com Reader installation | Windows.
To see if other users are experiencing similar download and installation problems, visit the Acrobat Reader user forum. Try posting your problem on the forums for interactive troubleshooting. When posting on forums, include your operating system and product version number.