Adobe Acrobat | Combining files error message

[Ané340006930d2t]

 When I am trying to combine files I get this error message below: Please advise how I can fix it? I am combining PDF's. 

[Amal.]

Hi @Ané340006930d2t 

Hope you are doing well and thanks for reaching out.

Is this an issue with a particular set PDF files or in general? Please try  with a different set of PDF files and see if that works.

Also, make sure, the PDF file is not password-protected. 

What is the version of the Acrobat you are using? To check the version go to Help > About Acrobat and make sure you have the application updated to the recent version 23.08.20533. Go to Help > check for updates and reboot the computer once. 

Let us know how it goes.

~Amal