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I have several PDF files that I used to be able to open, but now, they are asking for a password. I did not create a password for any of these files. Has anyone encountered this problem before? If so, how do I resolve it? Thank you.
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I've seen this recently and it was fixed in Reader using a patch. Make sure you have the very latest update.
In Reader use Help>Check for updates.
1 1 Upvote 121 Replies 121 Adobe Employee ,/t5/acrobat-reader-discussions/didnt-set-password-still-my-pdf-file-is-asking-for-a-password-to-open/m-p/10037584#M44913 Jul 31, 2018 Jul 31, 2018
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We're sorry for the trouble you had while opening the PDF file. Are you opening the PDF files in Adobe Reader or in any browser?
Have you created these PDF files by yourself, or have you received them? If any password was applied to the PDF file by the owner of the PDF, then the password is required to open the PDF file and there is no workaround to remove the password from the PDF and open it if you don't remember the password.
Are you getting the password prompt while opening a specific PDF or with all the PDF files? What is the dot version of Adobe Reader installed? To identify refer to Identify the product and its version for Acrobat and Reader DC
Navigate to the Document Properties from File>Properties>Securtiy and check the Document Security method . Is the Security Method is selected as "Password Security"?
Let us know how it goes and share your observation.