How to Fix Acrobat Reader That Won’t Start on Mac

Apple computer owners often discover various issues when it comes to upgrading their devices to the recent version of macOS High Sierra. While some of them do not find it possible at all, others experience less significant issues. Such consequences may involve the inability to launch Acrobat Reader after the update. To check if you have this pitfall, try to open any PDF file using Acrobat.

The error message telling that the file was not recognized is the primary alarm. It means you really have problems with this application.

Adobe’s Warning

Before the actual release of the latest High Sierra, the Adobe team shared the problems they worried about. Let’s say, the upgrade converted the boot volume’s file system to the new APFS file system. It will make it impossible to apply the boot volume as a scratch disk in the Scratch Disks section of Preferences. The bottom line is, Adobe Acrobat may not work properly under such circumstances. Even though the app can use the APFS boot drive, it is not reporting it correctly to the Scratch Disks section. That might be one of the deals.

Things to Try First

Of course, most Mac users start with uninstalling and reinstalling the app. It is one of the most popular ways to deal with any software-related problems. It is just as popular and quite effective as rebooting the target Apple device.

To remove Acrobat Reader from a Mac, follow these steps:

  1. Locate the app in the Applications folder.
  2. Once you find it, place the app in the Trash.
  3. Select Empty Trash and restart the Apple computer.
  4. Download and install the latest version of the software.

Mind that the outdated versions of some apps are usually the main cause of the failure. Thus, it is important to keep everything up-to-date.

In most cases, the suggested solution should help. In other cases, users may still find it impossible to launch the Reader. The system will insist that the newest version of the software is missing even though you have already installed it. Moreover, the app could be absent in both Finder and Applications folder due to the failure to install. In this situation, a user ends up broken without having any working version of Adobe Reader.

Most Effective Solution

If the recommendation above fails, a user should seek and delete all Adobe Acrobat-related data resting in the OS. Here is the list of things one should find and erase:

  • /Users/yourname/Library/Caches/Acrobat/
  • /Users/yourname/Library/Preferences/Adobe/
  • /Users/yourname/Library/Preferences/com.adobe.ARM.plist
  • /Users/yourname/Library/Preferences/com.adobe.AdobeRdrCEFHelper.plist
  • /Users/yourname/Library/Preferences/com.adobe.Reader.plist
  • /Users/yourname/Library/Preferences/com.adobe.Synchronizer.11.0.plist
  • /Users/yourname/Library/Preferences/com.adobe.Synchronizer.DC.plist
  • /Users/Shared/Adobe/
  • /Library/Internet Plug-ins/AdobePDFViewer.plugin
  • /Library/Internet Plug-ins/AdobePDFViewerNPAPI.plugin
  • /Library/Application Support/Adobe/
  • /Library/LaunchDaemons/com.adobe.ARMDC.Communicator.plist
  • /Library/LaunchDaemons/com.adobe.ARMDC.SMJobBlessHelper.plist

After erasing these junk data, start up the computer in a safe boot mode. After that, restart in a regular regime. After that, attend the official Adobe Acrobat Reader DC website to try the installation procedure once again.

A Piece of Advice from Experts

With each update of macOS Sierra, the complete information about the system’s compatibility with various apps may not be accessed on the release date. Such details usually show up later. Experts do not recommend upgrading to the most recent versions of Mac operating system until the list of compatibility becomes available. This way, you do not risk losing access to favorite, frequently used software.

In case a person runs any sort of responsible activities, which demands a high level of productivity (e.g., business), it is better to postpone the upgrade or ignore it at all.