Working on Windows 10 Enterprise, Version 1803, OS Build 17134.523
Acrobat Pro DC, Version 2019.010.20069

When combining a list of files, Acrobat will not actually combine the file type HEIC. Everything else is combined but there is no indication in Acrobat that it left the HEIC files out. When combining dozens of files, it is easy to miss this issue.The "Files" attachment shows two PDF's and an HEIC file that need to be combined. When I select all, right click, "Combine files in Acrobat...", I get the results in the "Results" attachment. All that appears is the two PDF's.

When combining pdf files coming from Nitro 9, in some cases I have issues with some sentences. There are missing letters.
It doesn't appear each times, but when it appears it is always the same mistake

Using Acrobat PRO DC 19.008.20074
When I open Adobe, Combine files, add the files I want to combine, either PDF or other word, excel, etc, click on Combine. What I end up with is a "PORTFOLIO". The thumbnails are all visible on the navigation pane but the actual PDF that was supposed to contain all the pages I just combined, there is only the first page, no other pages. I create Board packets with this feature. It has become a big headache. How do I get this to work.

When I create a "combined pdf" from several files, using Acrobat Pro DC, the first page of the resulting pdf portfolio "forces" one to download Acrobat Reader. I use a Mac and my preferred pdf reader is Preview so I do not then have Acrobat Reader installed on my Mac any longer. Why am I forced to download Reader?

If you add a pdf link in word it will not be accessible when you CONVERT the document to pdf. BUT if you create a pdf using the word file, the links created in the word document will be accessible. My request is that you make the hyperlinks accessible through pdf conversion as well. MEANING, please have the accessible when you file>>save as >> pdf.

for some reason when I have inserted a drawing and then inserted a call out over this drawing to identify things for my clients, when I create a PDF it either doesn't show the arrow correctly, or covers up areas with a blank spot. it has never done this before, it doesn't do it all the time either, even in the same document some will be exactly as they are represented in word, others not. makes my reports look very amateurish

I can drag and drop emails from Outlook into the Combine Files Window, however, when you "combine" the files, the attachments are embedded rather than attached at the end of each email. You can manually convert each email in Outlook with attachments in that fashion, but when you have 100+ emails with attachments, that just doesn't work.

Make Adobe Pro compatible with Chrome please so that it can convert web pages to pdf files.

I've been converting .ai to pdf by dragging onto Acrobat DC. By doing this, I don't need fonts or linked images. Had a file that gave me the error: "Acrobat pdf conversion could not be completed. This could be due to a network error or if there is no valid Acrobat online service membership."
Other .ai files convert just fine, but this one file it doesn't work. I dragged onto Acrobat Pro 11 and the file converts just fine. It's curious it works on an older version of acrobat but not DC.

Bug
When I choose File>Create>Combine Files into a Single PDF,
It should COMBINE FILES INTO A SINGLE PDF, not create a portfolio, which is what it does.

Adobe Acrobat Pro DC 2018.011.20040
Windows 10 64bit

How would I convert multiple img into a single pdf?

Would like to be able to select open tabs and combine/save them as one pdf rather than go out to the combine pdf function and drop/select them. Since they are already open and have been updated, now want to combine the tabs and not save the files separately and then use the regular combine function.

Every time i save a combined file, it saves as a portfolio. how do i turn that off.

When combining files/multiple pages into single pdf file, some pages maybe oriented horizontal vs vertical. It would be nice to be able to rotate all the pages to the same orientation prior to binding all the files.
Just a thought. This feature maybe in the program already and I just don't see it. I know you can do it from a single page, this is just to skip that step of doing it in one aspect of the program and saving then doing the 2nd combine step. Just a though

include a feature when converting files they remain in the same folder / directory to avoid major file displacements...

In Adobe XI, we were able to hide the Editing Tools and toolbars in a Portfolio, so when we sent it to a client, they were able to only view the documents. Can we please get that capability back in Adobe Acrobat 2017?

As a new user of Acrobat DC, I combine 2 files and save the portfolio. When I open up my new combined file there is a column panel on the left that shows the 2 documents that I combined. I cannot scroll through my new combined document from page 1 to the end. Rather, I must use arrows to toggle between my 2 documents. What am I missing to see it as one new combined document? Thanks.

How can I keep links from Visio to PDF

I'd love for Adobe to add support for combining and convert email attachments. We use Adobe Acrobat for bulk printing, and it would be wonderful if we could load email messages (.msg) files in the combine files to Adobe box, and then print them.