Missing core dll?

[drbwking]

I can open Reader DC in 64-bit Win 10 only with Admin privilege, otherwise get "Acrobat failed to open its core dll" message. Same message when clicking on a .pdf file (but it does work if I open with MS Edge). Also, MS files can save as .pdf despite the same error message which appears after saving.

I've tried repair, clear and re-install, and changing security permissions; any suggestions about what next?

(2 other similarly configured PCs, with different hardware, work fine).

[~graffiti]

Haven't seen this one in a while. Maybe this will help: Resolve the Acrobat Failed To Load Core DLL error when launching Reader

[drbwking]

Thanks for an answer - but already tried these fixes. When you say "not seen for a while" maybe there has been some other cure suggested?

[~graffiti]

I haven't really seen any. Mostly it has been due to malware over the last couple of years. I just haven't seen it pop up in months where it used to be daily.

Since you can't start-up Reader to check for updates, I would remove it completely using the Cleaner Tool from Adobe found here: Download Adobe Reader and Acrobat Cleaner Tool - Adobe Labs

Once that is done, reinstall from here: Adobe - Adobe Acrobat Reader DC Distribution

Hopefully that will take care of it.

[egipps]

Hi, not sure if I should start an new thread.  But I've the same problem since the latest Windows 10 update.  I've tried all the suggestions above but still can't open Acrobat Reader.  Any ideas?

[oneclot]

the culprit is your antivirus, normally Microsoft defender. uninstall and reinstalling adobe acrobat then install another antivirus like Kaspersky free cloud antivirus. Add adobe installation folder to the exclusion list of Kaspersky.

[ethsin]

.

Facing the same problem on Windows 10 64 bits. after the latest update. Have already tried all the fixes mentioned Including clean Uninstall and more to no avail. Don't think posting here is going to help looking at the responses above, but still putting this up in the forum.

The Error window reads ~~ Fatal Error: Acrobat failed to load its core dll.

[YourHelper · Accepted solution]

I got a fix!

Go to your Adobe Reader folder.

Right-click on AcroRd32.exe

Click Properties.

Then click on Compatibility Tab.

Click on Run this program as an administrator.

Apply and Save.

Try opening a PDF file.

A prompt of User Account Control will open.

Click on YES and Voila!

[shrimali_4285]

The fix will work for domain pc as well? Will it ask to enter admin cred every time when we open Adobe Reader or pdf files? Tried removing Adobe Reader using removal tool, and reinstall, repaired still facing same error - Failed to load core dll

[S. S]

Hi @shrimali_4285,

Hope you are doing well. Sorry for the trouble.

I would like to suggest three steps. Please try and let me know if it works:

1. Disable Protected Mode: Open Adobe Reader, go to Edit > Preferences > Security (Enhanced), and uncheck "Enable Protected Mode at startup." This can sometimes resolve DLL loading issues.

2. Re-register DLLs: You can try re-registering Adobe DLLs by running Command Prompt as an administrator and executing the following commands:

For 32 bit

regsvr32 /u "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.dll"
regsvr32 "C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32.dll"

For 64 bit

regsvr32 /u "C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.dll"
regsvr32 "C:\Program Files\Adobe\Acrobat Reader DC\Reader\AcroRd32.dll"

3. System File Checker: Run the System File Checker tool to repair any corrupted system files. Open Command Prompt as an administrator and run: sfc / scannow

Let me know if this works.

-Souvik

[YourHelper]

Happy it worked!

[YourHelper]

||UPDATE||

You might have to do these steps every time you start your pc/laptop.

[mm22743886ela2]

adobe reader is not working in windows 7 error is comming missing  core dll

[Test Screen Name]

What version of Adobe Reader?

[rameshwari25765974yxb3]

acrobat failed to load its core dll

[S. S]

@rameshwari25765974yxb3 Hi,

Sorry for the trouble.

You may refer to the given link and refer to the solution steps provided: Error: “Acrobat Failed to Load core DLL” (adobe.com)

Let me know if this helps.

Thanks,

Souvik.

[eclipse999]

Anyone have the new link for the cleaner?  Evidently it seems...that Adobe is forcing the new Creative Cloud...even to people who purchased Adobe over the years, over and over for updates, but are now trying to stop from using Cloud.  (Adobe erased my files for my former Adobe Pro that I paid them for, and now when I reinstall it, they Cloud version (that I tried as a trial, and hated), has taken my own laptop hostage.   Thanks for your help, if you can. Once I loved Adobe...no longer do at all.

[oneclot]

Antivirus is normally the culprit that deletes the dll file from adobe,
especially Avast antivirus software. Install an alternative antivirus like
"Kaspersky Security Cloud Free" free, then Uninstall and reinstall adobe.

[S. S]

Hi @oneclot @eclipse999,

If that is the scenario, we would suggest whitelisting the entire Adobe folder which allows the anti-virus to bypass the internal files for Acrobat and any Adobe application.

-Souvik.

[oneclot]

Whitelisting the entire folder of adobe acrobat didn't work for me with
Avast antivirus; Avast still deletes the dll file which never happened with
Kaspersky.

[S. S]

@oneclot We do not have any control over the workings of third party anit-virus applications. 

You may try scanning the application using Windows defender / Mac Protect and check if they flag any file for Acrobat as malicious. 

If not, we suggest contacting the anti-virus app developers to raise the issue with them.

-Souvik.

[deoki nandan28471632fefn]

adobe reader is not supporting