How to Fix Error 16 in Adobe Acrobat XI Pro on Windows 10
Question details
The user is unable to launch Adobe Acrobat XI Pro on Windows 10 due to a persistent Error 16 message that remains even after reinstalling and using the cleaner tool.
- Product
- Adobe Acrobat XI Pro
- Device & OS
- Windows 10
- Scenario
- Launching the application or attempting to verify the software license.
- Observed behavior
- The software fails to open and immediately displays an Error 16 prompt, indicating damaged licensing permissions or application configurations.
Ensure you are logged into your Windows 10 computer with an administrator account and have your software license key accessible before adjusting system folder permissions.
Adjust SLStore and Adobe PCD Folder Permissions
Fixing the permissions of Adobe's shared licensing folders allows the application to read and write license data correctly, resolving Error 16.
Error 16 is most commonly caused by incorrect permissions in the SLStore and Adobe PCD directories. Even if you uninstall the software, these folders and their restrictive permissions often remain on your system.
Open Windows File Explorer and navigate to C:\ProgramData\Adobe\SLStore. If you cannot see the ProgramData folder, click the 'View' tab at the top of File Explorer and check the 'Hidden items' box.
Right-click the SLStore folder and select 'Properties'. Go to the 'Security' tab and ensure that Administrators and System accounts are set to 'Full Control'. Apply the changes.
Navigate to C:\Program Files (x86)\Common Files\Adobe\Adobe PCD (or C:\Program Files\... on 32-bit systems).
Right-click the Adobe PCD folder, choose 'Properties', and navigate to the 'Security' tab. Grant 'Full Control' to both Administrators and System accounts, then apply and click OK.
Right-click the Adobe Acrobat XI Pro shortcut on your desktop and select 'Run as administrator' to test if the software launches without the error.
Perform a Clean Reinstallation with Admin Rights
Use the official cleanup tool and reinstall the software using elevated privileges to ensure all registry keys are written correctly.
Try WPS Office for Powerful PDF Editing and Document Management
If older PDF software continues to cause activation errors on Windows 10, switch to WPS Office. It includes a robust, free built-in PDF editor that is lightweight, eliminates complex licensing errors, and offers high compatibility with standard PDF and Microsoft Office formats.
- 1. Download WPS Office: Visit the official WPS website and download the free installation package for Windows.
- 2. Install the Software: Run the installer and follow the simple on-screen instructions to complete the lightweight setup.
- 3. Edit Your PDFs: Open WPS Office, select the PDF tab, and seamlessly open, view, or edit your PDF documents.
Frequently Asked Questions
What exactly does Error 16 mean in Adobe Acrobat?
Error 16 is a configuration error indicating that Adobe Acrobat lacks the necessary permissions to read or write to its licensing data folders (SLStore and Adobe PCD) on your system.
Can I still securely use Adobe Acrobat XI Pro on Windows 10?
While it can technically run on Windows 10, Acrobat XI Pro reached its end of support in 2017. This means it no longer receives security updates, making it vulnerable to newer threats. Transitioning to a supported PDF editor is recommended.
Why does the Acrobat Cleaner Tool not fix Error 16 automatically?
The cleaner tool is designed to remove installation files and specific registry keys. However, it does not always reset or delete the shared licensing folders if they have restrictive custom permissions set by the operating system.
How do I show hidden folders in Windows 10 to find the SLStore directory?
Open File Explorer, click the 'View' tab located at the top of the window, and check the box labeled 'Hidden items' in the Show/hide group. The hidden ProgramData folder will now be visible on your C: drive.
