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Fix the Issue “Adobe Combine Files Not Working” Using Best Ways

Published By Nilesh Kumar
Debasish Pramanik
Approved By Debasish Pramanik
Published On May 19th, 2024
Reading Time 7 Minutes Reading
Category Email Tips

 Facing the “Adobe combine files not working” issue. Don’t worry, as this post explains some solutions to avoid this issue.

Firstly, let’s get a clear understanding of this issue with the help of a user query:

Hello, Recently I have received some PDF files and I want to save them in a single file. However, using the “Combine Files” option is generating an error message. Now I am stuck here. Is there anyone who can help me to solve this issue?

The PDF file format has created a strong base in the area of digital document saving. It has made accessing and saving files simple. Proving the useful and advanced features by Adobe made user’s work easier. The majority of users nowadays prefer PDF format to store their crucial documents.

However, now the same PDF users are facing the issue of “Adobe combine files not working” when they are trying to use this tool. So, we have understood the issue and come up with a trusted solution that eliminates this. Before we move on to the solution part, let’s first explore the various reasons behind it.

Reasons for Unable to Combine Files in Adobe

Adobe Acrobat’s “Combine Files” feature is a powerful tool that allows users to move all data in a single file. However, it may encounter certain issues that can hinder the process. Below are some of the typical problems users may encounter while using Adobe Combine Files:

If a PDF file is secured with an Owner-Level password, then the user cannot merge two files. To combine them it needs to be unlocked. For that, the user will have to enter the password and then the user can continue with the merging process.

  • PDF file Exceeding the Size Limit of 2 GB

Suppose a PDF file size exceeds the limit of 2GB. Then, in that case, a user might face this “Adobe combine files not working” issue. One can compress their PDF file to take less space to avoid this. After doing it they can continue the process.

  • File Corruption or Damage

If a file is corrupted or damaged, Adobe Acrobat may be unable to read its content, leading to failure when attempting to combine it with other files.

  • Issues Related to Missing Data

After combining files, some users may find that certain pages, content, or formatting elements are missing or altered, leading to an incomplete or improperly merged file which leads to the problem of being unable to combine files in Adobe

Troubleshooting Steps For “Adobe Acrobat Combine PDF Tool Not Working”

We have manual troubleshooting techniques that you can follow if the “Adobe Combine Files Not Working” is giving you difficulties.

Step 1. Ascertain That You Own Adobe Acrobat Pro DC

Adobe Acrobat Pro DC has a tool called Combine Files. Make sure Adobe Acrobat is the correct version on your computer.

Step 2. Look for Updates on Software to recover the problem of being unable to combine files in Adobe

  • Launch the Adobe Acrobat Pro DC on your machine.
  • Check for Updates on the related issue
  • Go to the Help and check for any latest update
  • Follow the prompts to install any available updates.

Step 3. Restart Adobe Acrobat on Your PC 

  • Close all Adobe Acrobat windows.
  • Restart Your device to clear any problem:
  • Reopen Adobe Acrobat Pro after restarting your machine:

Step 4. Ensure Files Are Not Corrupted

  • To ensure none of the PDF files are faulty, open each separately in Adobe Acrobat before combining them.
  • If a file is corrupted then try to recreate or repair the damaged PDF file.

Step 5. Reduce the File Size to recover the issue of Acrobat Adobe Combine files not working  

  • Large files can sometimes cause issues
  • Use the File > Save As Other > Optimized PDF option to reduce file sizes before combining them.

Step 6. Use the Combine Files Tool Correctly

  • Open the  Adobe Acrobat Pro DC tool on your device.
  • Go to the  Tools > Combine Files.
  • To merge files, either drag & drop them into the Combine Files tool window or click the Add Files button.
  • Ensure that all files are arranged in the correct order.
  • Press the Combine button to merge the files into a single PDF.

Step 7. Check on File Permissions and Security

  • Check for the necessary permissions to ensure that the PDF files must open, edit, and save 
  • Remove the security restriction If any of the PDFs are secured with a password or restrictions first.
  • Open the secured PDF, and go to File > Properties > Security, to remove the restrictions and password.

Step 8. Repair Installation to repair the issue of Adobe Combine Files Not Working

  • Open Adobe Acrobat Pro DC.
  • Go to Help > Repair Installation.
  • Follow the prompts to repair your Adobe Acrobat installation.

Step 9. Try Combining in Smaller Batches

  • To find out if a particular file is the problem, consider merging a larger number of files in smaller batches.
  • Combine the smaller batches into a final single PDF if needed.

Step 10. Use an Alternative Method to repair Adobe combine files not working

If the Combine Files tool still isn’t working then you can manually combine PDFs by inserting pages from one PDF into another.

  • Open the first PDF in Adobe Acrobat Pro DC.
  • Insert pages from another PDF by going to Tools > Organize Pages > Insert > From File.
  • Select the PDF you want to insert and specify where to insert the pages.
  • Repeat this process for all PDFs you want to combine.
  • Save the newly combined PDF by going to File > Save As.

Step 11. Contact Adobe Support to repair the issue Adobe Combine files not working

If none of the above steps resolve the issue, consider reaching out to Adobe Support for further assistance:

  • Go to the Adobe Support page.
  • To contact Adobe representatives for assistance, use the chat, phone, or community support options.

You ought to be able to troubleshoot and fix problems with the Adobe Acrobat Combine Files function by following these comprehensive instructions. If problems persist, using the manual combination method or contacting Adobe Support can provide additional solutions.

Time-Saving Tip When You Cannot Combine Files in Adobe

If the troubleshooting steps are unable to resolve this issue, users can opt for a professional alternative. With the help of PDF Split and Merge Software, users can easily combine multiple PDF files into a single one. This tool offers a “Page range” option to complete the task. You can also create a new PDF or add to an existing one. This software can be used by Windows or Mac users, which makes it easier for both OS users. Moreover, the same software can be used to split large PDFs into multiple files.

Also Read: Methods that Can be Used to Take Permissions Off a PDF File


This article discusses some reasons and solutions for the issue “Adobe combine files not working”. To help the users to eliminate this issue we have explained the solution. One needs to check the size and security details of the PDF file. If the troubleshooting steps does not help, then users can opt for the recommended professional solution to get the job done.

Read More- How to Unprotect Multiple PDF Files in Most Efficient Ways?


By Nilesh Kumar

As a Chief Technical Writer, I know the technical issues faced by home and professional users. So, I decided to share all my knowledge via this blog. I love to help you with challenges while dealing with technical jargon.