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Why am I getting an error message when trying to combine files into one PDF file?

Community Beginner ,
Jul 28, 2017

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When I select multiple PDF files and try to combine them into one document, I get a message that "Adobe Acrobat has encountered and unidentified error" and no file is being created. This problem has only recently started as I have been able to merged documents in the past.

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Correct answer by LBExj | Community Beginner

The problem was not software related.

The files I was trying to merge into a single PDF file were stored in a shared folder on an internal server. These files would not merged into a single PDF. Our working files have always been stored on a server, but only recently have started being a problem merging into a single PDF.

When I copy these files back to the the computer I am using, they merged just fine using Acrobat DC.

Thanks for your help ...

Les

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Why am I getting an error message when trying to combine files into one PDF file?

Community Beginner ,
Jul 28, 2017

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When I select multiple PDF files and try to combine them into one document, I get a message that "Adobe Acrobat has encountered and unidentified error" and no file is being created. This problem has only recently started as I have been able to merged documents in the past.

Community Beginner
Correct answer by LBExj | Community Beginner

The problem was not software related.

The files I was trying to merge into a single PDF file were stored in a shared folder on an internal server. These files would not merged into a single PDF. Our working files have always been stored on a server, but only recently have started being a problem merging into a single PDF.

When I copy these files back to the the computer I am using, they merged just fine using Acrobat DC.

Thanks for your help ...

Les

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Create PDFs

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Most Valuable Participant ,
Jul 29, 2017

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Acrobat version? OS version?

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Community Beginner ,
Jul 31, 2017

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Acrobat DC ... I'm using the Creative Cloud.

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Most Valuable Participant ,
Jul 31, 2017

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OS version?

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Community Beginner ,
Jul 31, 2017

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Windows 7 ... sorry.

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Most Valuable Participant ,
Jul 31, 2017

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OK. Does this problem happen with specific files? Try narrowing it down. Merge only two files and see if it works.

Does it work if you attempt to merge the files from within Acrobat (via File - Create - Combines files into a single PDF)? etc.

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Community Beginner ,
Jul 31, 2017

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I have tried merging various number of documents and have received the same error message. All merged documents have been created using Acrobat DC (via File - Create - Combines files into a single PDF).

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Most Valuable Participant ,
Jul 31, 2017

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Run a Repair Installation from the Help menu.

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Community Beginner ,
Jul 31, 2017

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I have narrowed the problem ... I usually create PDF files using the "host" program Illustrator CC. These files will not merged.

I opened the Illustrator files using Acrobat DC and created PDF files ... these files will merge properly.

It must be a problem in the default PDF setting in Illustrator maybe?

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Community Beginner ,
Jul 31, 2017

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I ran the Repair Installation from the Acrobat Help menu ... it did not correct the problem.

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Community Beginner ,
Jul 31, 2017

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The problem was not software related.

The files I was trying to merge into a single PDF file were stored in a shared folder on an internal server. These files would not merged into a single PDF. Our working files have always been stored on a server, but only recently have started being a problem merging into a single PDF.

When I copy these files back to the the computer I am using, they merged just fine using Acrobat DC.

Thanks for your help ...

Les

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New Here ,
Oct 04, 2017

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I'm running into a similar problem and believe I have narrowed it down to the length of the file path.  It is not maxing out the OS file path length.  193 character file path will bomb, yet a file in the same location very similar file name except slight shorter, approximately 160 characters, will load combine without error.  Is your issue possibly length of file path?

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New Here ,
Oct 29, 2017

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I have come to the same conclusion. Though why all of a sudden I'm no longer able to merge files stored on a server, I don't know.

Is there a work around for having Acrobat DC go back to being able to combine files that are hosted on a server?

*(I can open the first file and add them in with the organise pages feature)

I use this feature contantly and don't love the idea of having to move all files I merge from the server to my local machine.

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New Here ,
Jun 02, 2018

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I just bought Adobe Acrobat and installed it on my Mac. I tried to combine files and I got an error message

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Most Valuable Participant ,
Jun 03, 2018

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What does it say?

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Adobe Employee ,
Jun 05, 2018

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Hello Markb,

We apologize for the inconvenience caused, as per the description above, you are not able to combine PDF files on Mac machine using Acrobat Pro DC, is that correct?

I have checked the records with your current Adobe ID(email) which you have used to sign-in on Adobe forums and found that the subscription of Acrobat Pro DC is canceled and inactive.

You can also check the details of your plan through Adobe.com>Manage Account>Plans and Products, or you can also refer to the Adobe article Manage your Creative Cloud membership

This is the reason you are getting the error message while combining any PDF files as you don't have any active subscription/license if Acrobat. To access the services, you have to subscribe to Acrobat license/subscription.

For plans and pricing, you can refer to Plans and pricing | Adobe Acrobat DC You can also contact Adobe support for the plans and pricing and to place a new order Contact Customer Care

Feel free to update this discussion for any further assistance.

Regards,

Anand Sri.

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New Here ,
Feb 02, 2019

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I have the same issue and I use a Mac but we are current on our subscription. This is what keeps coming up:Screen Shot 2019-02-02 at 9.07.02 AM.png

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New Here ,
Apr 05, 2020

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This solved my problem - thankyou.  Renamed file with shorter name.

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New Here ,
Oct 23, 2019

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I started getting this error message yesterday

- i have full CC subscription

- i updated to OS Catalina i think about 2 weeks ago and it was working fine then

- there shouldnt be a file name length error as i tried it with the files on the desktop but still got an error

- i was able to create a PDF by creating another PDF with the files that didnt combine and then combining both together but i dont want to have to do that all the time

 

Screen Shot 2019-10-24 at 9.25.49 am.png

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New Here ,
Mar 13, 2019

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I am also experiencing an error when trying to combine files.

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New Here ,
Apr 01, 2019

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We have an entire team that has the same problem.  Windows 10 - fully patched - new Adobe Acrobat Pro DC, trying to combine Word files, local and network, no difference where they are located.  Makes no difference the size.  We use Office 365 Premium.  All machines are managed by upstream corporation with no ability to disable updates.

There are a few sporadic installs on older PCs with Adobe Pro X that are still able to merge the exact same files from their native network location.  It's just anyone with newer PCs and Office installations that are unable to do so.

Any word from Adobe?

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New Here ,
May 09, 2019

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try this we have windows 7 devices with office 2010 - worked for me

Error: No PDF file was created because Adobe Acrobat encountered an unidentified error.

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New Here ,
Jun 27, 2019

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We are having a similar issue.  User tries to combine 10 word documents (Office 2016) in Adobe Pro 2017 on a windows 10 PC.  The first five documents string together and then stops on document 6 and gives error - no application found to open the document.  We resaved the document with a different name, copied the material and saved as new doc with 2 added to the name, converted to pdf - uninstalled Adobe and reinstalled, checked for updates, repaired office.  When using the pdf version to combine the file get error encountered when combining the file message.  The files are saved on a NAS storage device - the user emailed me the files, I saved them to my desktop and the combined with no issue.

We are also seeing an issue for this user when combining files that all seems to combine fine but then when you open the pdf pages are missing or text from one page is missing and a graph shows up on the other half of the page.  These are all combined using documents that were converted to pdf first from powerpoint or excel and look fine - then drop the information when combined.  It is impossible to be able to go back through a 300 page document to make sure every page converted properly.

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New Here ,
Oct 25, 2019

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For what it's worth, I was having this same mystery problem. I was trying to combine ~250 .jpg files into a PDF. It would get to image 130 or so and then start throwing errors. The workaround I used was to make 3 separate PDF's, max of 100 images each (the number might change, I suspect due to available memory?). I then combined those three PDF's with no issues.

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New Here ,
Oct 27, 2019

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Thanks for your reply

I too am able to do that but it makes my workflow slow in having to do that.

We dont pay Adobe the big $$$ for our subscriptions to have to do that.

Its like buying a car that only has 3 wheels. impractical! 😞 

 

cheers

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New Here ,
Nov 04, 2019

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I am now having what seems to be a similar problem on Macos 10.14.6 Mojave with the latest Acrobat DC version. I had been combining hundreds of TIF files each week with no problem then suddenly last week I would get errors trying to combine more than about 10 images. The trick of first creating multiple PDFs with fewer images and then combining the PDFs together works fine, but that's a ridiculous workaround. The issue cannot lie with the file naming or path because I've been using the same folder for my scanner for months and have hundreds of successful PDFs created from that location. I moved files, changed filenames, filepath names, etc. with no luck. The point at which the files start showing errors changes as I rerun the combine function so it is not an issue with the files. 

 

Adobe, did you make updates to Acrobat for it to function on Catalina that broke it on Mojave?

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New Here ,
Nov 06, 2019

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I've been having a similar problem now for several weeks, both on Mojave and latest build of Catalina. The issue arises when combining multiple image files (JPEG, PNG, TIFF all the same) into a PDF. So for example when I try to combine 50 files it will reject anywhere between 30 and 40 files with the "error during processing (file skipped)" error message. I tried different locations (external and internal SSD) and formats, nothing seems to work. This is extremely frustrating - I am forced to use native macOS procedures for the creation of PDF files, and there is no option to create a PDF file larger than A4 (or legal) size, which means hi-res original photos end up being resized dramatically. If anyone has a fix for this please let me know.

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New Here ,
Nov 14, 2019

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Same issue as everyone else. Just upgraded my OS to Mohave, attempting to make a 10 page PDF of small locally stored .png screenshots which worked perfectly in the older OS, now I consistently get the same error message. No explanation or resolution of this issue. What the heck!

Screen Shot 2019-11-14 at 2.15.27 PM.png

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New Here ,
Nov 14, 2019

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After working with Adobe technical support on this they entered bug ADC-4287003 for this problem. I confirmed it is not the files because it happens at different points in a set of files being combined depending on whether they are TIF, JPG or PNG. It is also not the macOS version since it happened to me on both Mojave and Catalina. The latest Acrobat DC for Windows does not have this problem (and disappointingly completes the combine much faster than the Mac version of Acrobat DC - running on the same Mac hardware in a VirtualBox machine). Adobe did not tell me when to expect this bug to be fixed.

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New Here ,
Nov 14, 2019

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For those who can't wait for an update: an Adobe customer support rep suggested a workaround that doesn't solve the problem in and of itself and requires an extra step. Basically, you need to create individual PDF files of the images with the "Create PDF" tool in a first step, and then proceed to merge those individual files into a single file in a second step. Like I said, this is not a perfect or permanent solution and is slightly more time consuming, but I'm glad this option is available for the time being. Thought I'd share this with those of you who weren't fully aware of this possibility (as I was). Certainly looking forward to that update though!

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New Here ,
Nov 14, 2019

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They suggested that to me too although I already knew that was a workaround before I contacted them. For me I'm combining 1000's of page scans into individual 30-40 page PDF files so no way I'm going to double my work time like this. The problem is it seems there is a cache or aggregated file size issue so the point at which the combine process errors changes. For one set of 40 images it stopped at 16 then for another set of 40 images it stopped at 19. Trying to guess what grouping of files will work is a waste of time. Adobe rep working live on my computer spent 30 minutes trying to do just this which was frustrating. Acrobat DC on VirtualBox Windows 10 is the only reasonable solution for me right now.

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New Here ,
Nov 14, 2019

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I just downloaded the legacy 2017 edition and it works fine.

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