Windows 10 - Explorer issue

Question

I have a MS Windows 10 computer that has only recently experiencing an issue with Explorer, where the preview for many PDF Files say's: "The file you are trying to open may harm you computer. . ."

Apart from unlocking these in Properties, which doesn't always work, is there a fix that can be done to unlock all the PDF Files?

Answer 1

This problem was initially thought to be a bug, however it is caused by a new security feature that was added to Windows 11 in the October Update (see link below), currently there is no working method to disable this function, many people are indicating this feature is causing major problems with their workflow, so hopefully they may provide a setting to disable this new feature in an update, but for now, that is not possible, the best option is to open the Feedback Hub app and report this to their developers there.

https://support.microsoft.com/en-us/topic/file-explorer-automatically-disables-the-preview-feature-for-files-downloaded-from-the-internet-56d55920-6187-4aae-a4f6-102454ef61fb