일련번화확인불가에 대한 해결

Hi 용주안,

As you get the error when opening the PDF, try once to sign out from the application.

Restart your machine and then launch the application. Sign-in with your Adobe ID.

Check if that makes any difference.

Could you please let us know if you are opening PDF in Adobe Acrobat Reader DC or Adobe Acrobat DC?

Can you share the screenshot of the message you get when you open the PDF?

To add the screenshot here, please use the insert icon provided in the reply window as shown below:

Once you click on this icon, you get a small window.

Click on Insert Image and then browse the location where you have saved the screenshot file.

Select the file and click on Open > Insert Image.

We will be waiting for your response.

Let us know if you need any help.

Regards,

Meenakshi