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stacey_kis
Participant
October 21, 2025
Answered

Security "Unblock"

  • October 21, 2025
  • 3 replies
  • 1943 views

When i am trying to preview a pdf document in file explorer, it now says "the file you are attempting to preview could harm your computer, if you trust the file and the source you received it from, open it to view its contents".   When i go to the document properties, under General/Security, there is a check box at the bottom to "unblock" the document. Is there a way to remove this security feature so i dont have to do this?  I have been using adobe pro for years, and this is new, never happened to me before. Thanks in advance!

    Correct answer Nicole25806354ehxa

    In File Explorer: go to the folder this is happening in. Hold down the shift key and right click in a blank space in the folder. Open Powershell window here. Then copy paste this into it:   dir -Recurse | Unblock-File  Then close File Explorer and or reboot your computer. Seems to have solved it.

    3 replies

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    Nicole25806354ehxaCorrect answer
    Participant
    February 19, 2026

    In File Explorer: go to the folder this is happening in. Hold down the shift key and right click in a blank space in the folder. Open Powershell window here. Then copy paste this into it:   dir -Recurse | Unblock-File  Then close File Explorer and or reboot your computer. Seems to have solved it.

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      nancynonya
      Participant
      March 23, 2026

      THANK YOU!!  I can’t believe this was so easy - this info needs to be spread far and wide.  I can finally see the files in preview again without unblocking every file in the folder.  I tried Microsoft’s Powertoys but it wasn’t great and messed up my preview in Outlook.  This is a life saver!  

       

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        Nicole25806354ehxa
        Participant
        February 19, 2026

        I’m having the exact same problem. I don’t have the time or desire to unblock every single file that is doing this. There must be a way to change the settings to stop blocking PDF’s from other computers. I use it for invoicing and download PDF’s from multiple vendors.

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        Tariq Dar
        Legend
        October 21, 2025

        Hi @stacey_kis,

         

         

         

        Thanks for reaching out! The message you’re seeing is a standard Windows security prompt rather than an Acrobat error. It appears when a file is downloaded or shared from the internet or email. Windows marks it as “potentially unsafe” until you confirm it’s from a trusted source.

         

        If you trust the sender or know the file is safe, you can remove the warning by:

         

        1. Right-clicking the PDF in File Explorer.

        2. Selecting Properties.

        3. Checking the box Unblock at the bottom, then clicking Apply and OK.

         

         

        After that, reopen the file in Acrobat, and the message should no longer appear.

         

        Hope this helps clarify the situation! Let us know if you continue to see the prompt even after unblocking the file.



        Best regards,
        Tariq | Adobe Community Team

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        stacey_kisAuthor
        Participant
        October 21, 2025

        thank you. Yes I have been doing that. Do you know if there is a setting that I wont have to do that for every single PDF document that i want to preview? It is becoming overwhelming and time consuming. Appreciate it!

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