When trying to combine multiple pdfs into one, some of the files will not combine. There is an exclamation mark inside a yellow triangle?

Just for anyone looking for the answer in the future like I was...when ⚠️ pops up you just need to save the document your trying to add the files to first then proceed to add files and combine as desired. Hope this helps.

Hello Peggyf,

Sorry for the delayed response and inconvenience caused. As per the description above, you are not able to combine PDF files as getting an exclamation mark, Is that correct?

Please check for any pending updates of Acrobat from help>check for updates, reboot the machine after installing the updates and then try combining the file.

Are all the files on your local system or are they on a network drive? If the file path you are combining is especially long, try renaming/shortening the file path and see if that helps.

Try resetting the Acrobat preferences once and reboot the machine, to reset preferences, refer to

If the issue still persists, please share the following details:

• Dot version of Acrobat installed, to identify refer to Identify the product and its version for Acrobat and Reader DC
• Is it a Mac or Windows machine?
• Screenshot of the error page with the exclamation mark in the yellow triangle, https://forums.adobe.com/docs/DOC-7043#jive_content_id_How_do_I_attach_a_screenshot

Let us know how it goes and share your findings.

Regards,

Anand Sri.