Security "Unblock"

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.

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.

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.