How to Fix Acrobat Professional 2017 Installation Files in Use Error
Question details
The user needs to resolve an installation error indicating that required files are already in use, which prevents the software setup from completing.
- Product
- Acrobat Professional 2017
- Device & OS
- Windows
- Scenario
- Attempting to install or reinstall Acrobat Professional 2017 on a computer.
- Observed behavior
- The installer abruptly stops and displays an error message stating that installation files are already in use, typically caused by hidden background processes.
Ensure you have saved all ongoing work and closed any active applications before troubleshooting to avoid data loss when restarting system processes.
Restart Windows and Retry the Installation
A simple system reboot is often the most effective way to clear hung background processes holding your installation files hostage.
Software installers often fail when hidden processes from a previous attempt are still running. Restarting the operating system provides a clean slate.
Save your documents and safely close any open windows or software.
Click the Start menu, navigate to the Power options, and select Restart.
Once Windows has fully rebooted, locate your Acrobat Professional 2017 setup file and double-click it to begin.
End Conflicting Processes via Task Manager
Manually terminating Adobe Application Manager processes can instantly free up the locked installation files without needing a system restart.
Run the Installer as Administrator
Elevated system privileges allow the installer to override certain file-locking restrictions and correctly overwrite necessary files.
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Bypass complex software setups and frustrating file-in-use errors. WPS Office features a powerful built-in PDF editor that allows you to instantly view, annotate, edit, and convert PDF documents without heavy background processes dragging down your system.
- 1. Download the software: Visit the official WPS Office website to download the lightweight installer.
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Frequently Asked Questions
What is PDApp.exe and why is it causing installation errors?
PDApp.exe is the core executable for the Adobe Application Manager. It runs in the background to handle licensing, software updates, and downloads. When it gets stuck or remains active from a previous session, it locks setup files, triggering the 'files in use' error.
Why does the installer say files are in use when I have no applications open?
Even if no application windows are visible on your desktop, system-level processes like Setup.exe can remain actively running in the background if a previous installation or update failed to terminate correctly.
Will downloading a new installer file resolve this issue?
Yes, occasionally the installation package itself becomes corrupted, causing it to stall and lock files incorrectly. Downloading a fresh installer from the official website and running it as an administrator often circumvents the problem.
