How can I add a PDF file to a combined file

I'm having difficulty to combine files and maintain an error message that does not save my combined file once complete... are large PDF files?

Hi erika510,

You should check, whether or not part of the pdf document is protected.

Also, let me know which version of Acrobat you are using? Try to install the latest update.

Kind regards

Ajlan Huda.

Tags: Adobe

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