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Receiving Error Code 0x4003000a when opening a file

Leonard Kim

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Leonard Kim

We receive the above error code when opening a pdf file that can be opened in other programs such as Adobe or Chrome/Edge.  Anyone know why this  happens?

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  • Official Nitronaut

Hello @Leonard Kim

Here are some troubleshooting questions to help identify the cause of the error:

1.    Are you encountering this error with a particular PDF file or with multiple files?
2.    Have you tried opening the same PDF file on a different device or using a different program? Did it open successfully?
3.    Which specific build of Nitro are you using to open the PDF file? Help >> About Nitro Pro
4.    Are you able to open other PDF files successfully using Nitro?
5.    Are there any error messages or additional details provided along with the error code?
6.    Have you tried restarting your computer and then attempting to open the PDF file again?
7.    Are there any specific patterns or similarities among the PDF files that you are unable to open? For example, are they large in size, password-protected, or containing certain features?

Providing answers to these questions will help in narrowing down the potential causes of the error and finding a suitable solution.

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Leonard Kim

1. Yes with other files also.

2.  Yes that was stated when in my original comment.


4. Yes

5. No other messages.

6. Yes, that is the first thing we tried.

7.  They are larger files, not password protected.


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  • 8 months later...
Francis RE

Hi @Leslie V,


I have the same error code.


1. Same error when opening ANY files with a file size more than 100MB

2. Yes, already tried in another device with the same version and still having the same issue

3. Nitro PDF Pro

4. Yes, able to open ANY files with a file size less than 100MB

5. See attached screenshot here

6. Yes

7. Large in size


Thanks and looking forward to fix this issue.

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  • 1 month later...

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