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Error code 0:521

New Here ,
Jun 12, 2019

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Hi,

I have a user that gets this error every day when she tries to open up a PDF. It is only the first time she tries, and she has to close out reader, and open it back up. Then it functions normally. I have tried cleanly removing all traces of reader from her machine and re-installing, as well as ensuring that it is set as the default PDF handler without an issue. This is on a Windows 10 machine.

The full error is: There is a problem with Adobe Acrobat/Reader. If it is running, please exit and try again (0:521)

Any help appreciated.

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Error code 0:521

New Here ,
Jun 12, 2019

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Hi,

I have a user that gets this error every day when she tries to open up a PDF. It is only the first time she tries, and she has to close out reader, and open it back up. Then it functions normally. I have tried cleanly removing all traces of reader from her machine and re-installing, as well as ensuring that it is set as the default PDF handler without an issue. This is on a Windows 10 machine.

The full error is: There is a problem with Adobe Acrobat/Reader. If it is running, please exit and try again (0:521)

Any help appreciated.

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New Here ,
Jun 14, 2019

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I accidentally marked this thread as answered. It is not, unfortunately. Still open to any suggestions

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New Here ,
Jun 18, 2019

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Still an issue...

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Adobe Employee ,
Aug 02, 2019

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Hi Lukash,

We apologize for the delay in response to your query. Are you still experiencing the same error or managed to find the solution?

If you are still looking for the resolution, then you may try the following troubleshooting steps-

1- Acrobat and Reader official update (19.012.20035)  is available. This update will be automatically pushed to all existing installations of Acrobat and Reader. If you want, you may also manually trigger the update early by opening the application and going to Help > Check for Updates or install manually: DC Release Notes — Release Notes for Acrobat DC Products

2- Open Task manager>Close Acrobat/Reader processes running at the background>Reboot system>Restart Reader.

3- Try this workaround and let us know if this helps-

Navigate to Reader>Edit>Preferences>Security (Enhanced)>disable "Protected Mode at Startup" and "Enhanced Security">OK>Reboot Reader

Note: Changing the above security settings could pose security risks. We suggest you to turn it back On once you are done with testing.

Thanks,

Akanchha

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New Here ,
Aug 09, 2019

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Akki_24,

I am experiencing the same problem Lukash is when viewing pdf's with Acrobat Reader DC.  I know who many others who are experiencing it as well.  We are all running the latest update (19.012.20035).  The workaround you provided works but this is not an acceptable solution since we do not want to expose ourselves to security risks.  Is Adobe working on a resolution to this problem?  I have tested other Reader versions (older ones such as XI, 9, etc.) and none of them have this issue.

Also, I have Adobe Acrobat DC Pro as well.  If I uninstall Reader DC and allow the Pro version to work as my pdf reader plugin I never experience this problem.  The issue is unique to Reader DC only and it is causing many users much frustration.  By the way, in case this helps we are all using the latest version of IE 11 and Reader DC is the plugin.

Thanks,

JP

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Adobe Employee ,
Aug 19, 2019

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Hi J,

Apologies for the delay in response and the trouble caused, as stated above turning off the security works for you, however, it's not recommended and lead to security risk.

You may follow the steps provided in the help article  - Protected Mode troubleshooting | Adobe Reader

Also, a new update for Adobe Acrobat DC and Adobe Reader is available v19.12.20036. Please update the application to the latest version. Go to Help > Check for Updates. To know more about the latest update available please refer to the link - DC Release Notes — Release Notes for Acrobat DC Products

Let us know if that works for you

Regards,

Amal

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New Here ,
Nov 18, 2019

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Hi Akki_24,

I was getting the same error  previously the I followed the steps as said above but my pdf's are still not opening .Geting an error pop-up saying "file is damaged and could not be repaired adobe acrobat Local/EWH-11628-1".

I expect some help from you.

Thanks in advance.

Regards,

Bikas

 

 

 
 

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