How to Fix Adobe Acrobat XI Pro Mac Installer Stuck at 90 Percent
Question details
The user is trying to install Adobe Acrobat XI Pro on a Mac, but the installation process hangs completely around 90 percent.

- Product
- Adobe Acrobat XI Pro
- Device & OS
- macOS
- Scenario
- Installing or reinstalling Adobe Acrobat XI Pro and entering the product serial number.
- Observed behavior
- The installer becomes unresponsive at 90% completion. The Mac system still indicates that the installation process is running in the background, preventing further action.
Make sure you have your official Adobe serial number handy and temporarily disable any aggressive antivirus software that might be blocking the installation files on your Mac.
Force Quit and Run the Official Installer Again
Restarting the system clears stalled background processes, allowing a fresh official installer to complete the setup without freezing.
A frozen installer is often caused by a temporary system glitch or a background process conflict. Force closing the application and restarting your Mac is the safest first step.
Press the Option, Command, and Esc (Escape) keys simultaneously. Select the Adobe Acrobat installer from the list and click 'Force Quit'.
Click the Apple menu icon in the top-left corner of your screen and select 'Restart' to clear out stuck system tasks.
Go to the official Adobe download page and retrieve a fresh copy of the Acrobat XI Pro installer, ensuring the file is completely downloaded before running it.
Double-click the newly downloaded installer, follow the on-screen prompts, and enter your serial number when requested.

Remove Incomplete Installations Before Retrying
Clearing out partial files prevents corrupted data from interfering with subsequent installation attempts.
Use WPS PDF to View and Edit PDFs Without Heavy Installations
If you urgently need to edit, merge, or sign PDF documents and cannot wait to resolve complex installation issues, WPS Office offers a built-in, lightweight PDF editor that installs instantly.
- 1. Download and install WPS Office: Get the official WPS Office package for Mac, which installs quickly in just a few clicks.
- 2. Launch WPS PDF: Open WPS Office and select the 'PDF' tab from the main homepage interface to access all PDF tools.
- 3. Edit your document: Click 'Open PDF' to import your file, and immediately start editing text, adding signatures, or extracting pages.

Frequently Asked Questions
Why does the Adobe Acrobat installer hang at 90 percent on a Mac?
This commonly occurs due to permission conflicts, blocked background processes, or trying to install older software like Acrobat XI Pro on an incompatible, newer macOS version.
Is Adobe Acrobat XI Pro supported on my current macOS?
Adobe officially ended support for Acrobat XI Pro in 2017. If you are running macOS Catalina (10.15) or newer, the 32-bit components of Acrobat XI Pro are no longer supported, which may cause the installation to fail.
How do I safely exit a frozen installation window on a Mac?
You can force close the installer by pressing Option + Command + Esc, selecting the stuck installation program from the list of active applications, and clicking the 'Force Quit' button.




