Start the installer after downloading | Acrobat X, CS5.5 and earlier

Important: These instructions are for products downloaded using Akamai Download Manager (Akamai NetSession Interface). These products include software purchased on the Adobe.com Store and some trial software, including Acrobat X Pro and Creative Suite 5.5.

If the installer doesn’t start automatically when your download completes, you can start it manually.

• (Trial downloads) Check to see if there is a Start Download or Resume Download shortcut on the Desktop. If so, double-click it and wait for the download to complete. Akamai Download Manager removes the shortcut when the download finishes.
  
• (Adobe.com Store downloads) Sign in to your Adobe.com account, navigate to your order, and restart the download. It resumes where it left off. 
  
• Navigate to the location where you saved your download. If you see any files ending in ".part" then the download did not finish. ".Part" files are temporary files replaced by .7z, .exe, or .dmg when the download is complete.

Tip: If you can't remember or don't know where you saved your downloads, see Find downloaded files. On Mac OS, there is one .dmg file. On Windows, there is an .exe file and possibly a .7z file.

Important: Some Windows product downloads include two files: an .exe file and a .7z file. To install the software, it's necessary that both files are downloaded and located in the same folder. Otherwise, an error can appear when you start the installer. Errors include "Windows cannot open this file" and "The file archive part of Adobe [product name] is missing."