Fix Acrobat Installer Unsupported or Damaged Error on macOS Catalina
Question details
The user is unable to install Adobe Acrobat on macOS Catalina because the system triggers an error stating the installer file is unsupported or damaged.
- Product
- Adobe Acrobat
- Device & OS
- macOS Catalina
- Scenario
- Downloading and executing the Acrobat installer on a Mac.
- Observed behavior
- The installation process halts immediately, displaying an alert that the downloaded file is unsupported or damaged.
Verify your current internet connection stability and ensure you have an active Adobe subscription or license before attempting to redownload the software.
Download a Compatible 64-Bit Acrobat Installer
macOS Catalina completely dropped support for 32-bit applications. You must use a 64-bit compatible version, such as Acrobat DC, downloaded directly from the official source.
Older versions of Adobe Acrobat (like Acrobat XI) are 32-bit and will immediately trigger an 'unsupported' error on macOS Catalina. Additionally, an incomplete download can result in a 'damaged' file warning.
Check the exact name of the installer you downloaded. Ensure you are downloading a 64-bit release, such as Adobe Acrobat Pro DC or Standard DC.
Navigate to your Downloads folder and move the current Acrobat installer file to the Trash to prevent confusion.
Open your web browser and navigate directly to the official Adobe Acrobat download portal. Avoid using third-party software repositories.
Click the official download link for the macOS installer. Wait for the download to reach 100% without pausing or interrupting the network connection.
Double-click the newly downloaded .dmg or .pkg file to launch the setup and proceed with the installation.
Bypass macOS Gatekeeper Restrictions
If you are certain the file is official and fully downloaded, macOS Gatekeeper might be incorrectly flagging the installer as damaged.
Edit PDFs Easily with WPS Office for Mac
If you are struggling with heavy software installations or compatibility issues on your Mac, WPS Office provides a powerful, lightweight alternative. It features a built-in PDF reader and editor that operates smoothly on macOS without the complex setup.
Frequently Asked Questions
Why does macOS Catalina say my app is unsupported?
macOS Catalina requires all applications to be 64-bit. If you attempt to install a 32-bit version of Adobe Acrobat, the operating system will block it and display an 'unsupported' error.
How can I tell if my Acrobat installer file is damaged?
A damaged file error usually means the download was interrupted or corrupted. You can verify this by comparing the file size of your downloaded file against the official file size listed on Adobe's website. If it is significantly smaller, the download is incomplete.
Does WPS Office offer PDF editing on Mac?
Yes, WPS Office for Mac includes a built-in PDF toolkit that allows you to read, annotate, edit, and convert PDF documents seamlessly, making it a great lightweight alternative.
