Software⏱️ 3 min read📅 2026-06-15

How to Fix: How do I change the security level to avoid "The security level is set to High" error when merging MS docs with Adobe Acrobat X Pro?

Error when merging MS docs with Adobe Acrobat X Pro due to high security level.

Quick Answer: Enable macros created by Adobe Systems Inc. in the "Security Warning" dialog.

The error 'The security level is set to High' occurs when Adobe Acrobat X Pro attempts to merge MS Word documents, specifically when macros are involved. This issue affects users who have both Microsoft Word 2010 and Adobe Acrobat X Pro (CS 5.5) installed on their systems.

This error can be frustrating as it prevents the successful merging of Word documents, causing delays in document processing and potentially leading to data loss or corruption.

💡 Why You Are Getting This Error

  • The primary reason for this error is that Adobe Acrobat X Pro's macro settings are set to High by default. This setting restricts macros from running automatically, which can prevent the successful merging of Word documents that contain macros.
  • Another possible cause is that the user has not enabled macros created by Adobe Systems Inc. or has disabled them through the application's security warning dialog box.

✅ Best Solutions to Fix It

Enabling Macros Created by Adobe Systems Inc.

  1. Step 1: Open Adobe Acrobat X Pro and navigate to the 'Security Warning' dialog box.
  2. Step 2: In the 'Security Warning' dialog box, select the checkbox next to 'Enable macros created by Adobe Systems Inc.' and click 'OK'.
  3. Step 3: Repeat this process for any other security warnings that appear during the merging process.

Lowering the Security Level in Adobe Acrobat X Pro

  1. Step 1: Open Adobe Acrobat X Pro and navigate to the 'Edit' menu.
  2. Step 2: Select 'Preferences' from the drop-down menu.
  3. Step 3: In the 'Preferences' window, click on the 'Security' tab.
  4. Step 4: Decrease the security level by moving the slider towards a lower setting (e.g., from High to Medium).
  5. Step 5: Click 'OK' to save the changes and close the Preferences window.

🎯 Final Words

To resolve the 'The security level is set to High' error when merging MS docs with Adobe Acrobat X Pro, you can either enable macros created by Adobe Systems Inc. or lower the security level in Adobe Acrobat X Pro. By following these steps, you should be able to successfully merge your Word documents without encountering this error.

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