Editing a PDF - Adobe Acrobat has encountered an unknown error.

Report · Jan 20, 2020

When attempting to edit a PDF in Adobe Acrobat Pro DC, I get the error message 'Adobe Acrobat has encountered an unknown error'. This happens with 90% of my PDFs that I try to open and edit. I have seen a lot of work-arounds, but I am looking for a permanent solution that prevents this from happening.

Report · Jun 17, 2020

I have the same issue. It happens when I try to edit ANY PDF. I am fully updated to the latest version and tried the workaround. Nothing works. Any solution yet?

Report · Jun 17, 2020

I am having exactly the same issue on Mac OS 10.15.5 Worked well until today. Other tools seem to work fine.

Report · Jun 18, 2020

Hi there

We are sorry to hear that. please try to do 'Save As Adobe PDF' and sasave the file with a different name and see if that makes any difference.

Regards

Amal

Report · Jun 19, 2020

Hi i have the same problem.

I tried at many PDF, option to add image (jpeg, png) just dosen't work

What i noticed when "Run as administartor" to option works correctly and without the problem.

In normal work is just not efficent to open each file as Admin, do you now solution for this

Report · Jul 02, 2020

All,

I am having the exact same issue. Following this thread I have checked for updates and downloaded the latest from the link above even though the "check for updates" said that my PC had the latest version. The only thing that is working for me is the "Print to adobe PDF" option which is extremely time consuming when I have to use this feature constantly.

Adobe, you need to stop placing the blame on updates and your customer. This is a process that needs debugging on your end. Please fix this so we can get what we are paying for.

Report · Jul 03, 2020

Hi there

We are sorry for the trouble. To further investigate the issue would you mind sharing the version of the Adobe Acrobat/Reader DC you are using? Go to Help > About Adobe Acrobat /Reader DC

PLease try to turn off the protected mode for testing. Go to Edit (Windows), Adobe Acrobat/Reader DC (Mac) > preferences > Enhanced Security > turn off the protected mode and uncheck the enhanced security > click ok

Note: Please turn on the security after testing.

Are you on a Mac or Wndows machine and what is the version of the OS

Please create a new test user profile with full admin rights or enable the root account in Mac and try using the application there and check.

Also please share some sample files so we can test it at our end . please upload the files to the document cloud https://documentcloud.adobe.com/link/home/ , generate the link and share it with us.

If it still doesnt work, please collect the procmon logs https://docs.microsoft.com/en-us/sysinternals/downloads/procmon as describesd and shre them for investigation. download the process monitor tool and run the application then try to reproduce the issue in Acrobat and collect the logs.

Regards

Amal

Report · Nov 10, 2020

After complaints from so many users, all Adobe says is "it works fine on our side". Does it mean as long as it works on Adobe's side it does not matter if it works on the users' side? Everything was working fine until the app was updated. Could you just let us download the old version again until you have the bug fixed?????????

Report · Aug 07, 2020

We had the same problem here. Fortunately we had one working environment. Comparing regkeys showed a difference in a language-key: [HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\DC\Language\UseMUI]

In our case bUseMUI was set to 00000001. Changing it to 00000000 was the solution.

The regkey should be as followed:

[HKEY_CURRENT_USER\Software\Adobe\Adobe Acrobat\DC\Language\UseMUI]
"bUseMUI"=dword:00000000

You can also change it at preferences: Preferences, Language, Application Language: set to English

This issue was probably caused during updating from DC15 (Dutch version) to DC20 (English version).

Report · Sep 03, 2020

I have this issue as well. I am a billing administrator for a law firm and we use an ancient but reliable program called RTG to generate our invoices using different formats. Adobe allows me to edit one format (Arial 12pt) but not another (Courier New 12pt.) Because the only tangible difference between the formats (that I can tell, any way) is the font, I wonder if it is an issue with fonts? Amal, I would like to send you two different PDFs.

I am using Adobe Acrobat XI Pro, version 11.0.23 installed by our IT administrator. There are no updates for this, and I do not have the option to request a different version. Ergo, please don't reply with steps to update my version.

Report · Sep 30, 2020

Same issue here, any workable solution yet besides update and print to pdf?

Report · Feb 04, 2021

try this version:

ftp://ftp.adobe.com/pub/adobe/reader/win/AcrobatDC/1901020099/AcroRdrDC1901020099_en_US.exe

Report · Jun 14, 2021

Print --> Adobe PDF --> Save document. Now you can edit your PDF

Report · Jun 14, 2021

You must not read the thread before commenting. This isn't the solution we are looking for.

Report · Apr 10, 2024

Could you please provide an update on the "permanent solution" for this issue? Despite it being 2024, the problem persists. Previously, I was able to utilize this feature without complications; however, I've recently encountered an unspecified error. Given the substantial fees associated with this service, I am concerned and would like to understand the reasons behind this error and what measures are being taken to resolve it.

Report · Apr 17, 2024

Hi there

Hope you are doing well and thanks for reaching out.

Please go through all the correct answers marked in the similar discussion https://adobe.ly/3vN1qXL and see if that works for you.

~Amal

Report · Jun 11, 2024

Hello Amal,

I have follow all the steps on this thread and followed many other steps on different threads and I still cannot get this to work. I will attach the form I need to be able to edit. My employees including myself are running into the same problem and I pay a lot of money a month to be able to edit this form.

Report · Jun 11, 2024

Hi there,

Thanks for sharing the PDF file, i have checked it and found that it is created using a non Adobe application 'iText Sharp' , please try to re-create the PDF file via Adobe Acrobat application and see if that works for you.

~Amal