An outdated or corrupted browser cache is a common reason for elements on a web page, including PDFs, to not display correctly. Clearing your browser cache should prompt your browser to download up to date content and hopefully fix the issue with rendering your PDFs properly.
Source : https://www.uhd.edu/computing/training-lms/troubleshooting-chrome-pdf-viewer.aspx
The default file management app in Windows 10 is File Explorer. You can access File Explorer in several different ways in Windows 10. By default, the File Explorer app (a folder icon) is pinned to the taskbar. This is the fastest way to access File Explorer.Nov 9, 2019
Source : https://www.lifewire.com/what-is-a-file-manager-4589189
Your laptop doesn't have a PDF reader installed. Your PDF reader or preferred program is out of date and needs an update. Your PDF application is potentially damaged or needs to be rebooted. The PDF is potentially damaged or tampered with.
Source : https://www.adobe.com/acrobat/hub/why-pdfs-will-not-open.html
Where to find downloads on your iPhone or iPadOpen the Files app. Don't have the blue Files app icon on your Home Screen? Swipe down from the center of your Home Screen, then search for the Files app.Tap the Browse tab.Tap iCloud Drive.Tap the Downloads folder to see your downloaded files.Oct 13, 2023
Source : https://support.apple.com/en-us/102440
Your file download may be blocked for one of a few reasons: We think it might be a malicious, unwanted, uncommon, or insecure file. Malicious: You tried to download malware. Unwanted: You tried to download a deceptive piece of software.Aug 11, 2023
Source : https://forum.squarespace.com/topic/249881-chrome-blocking-and-marking-digital-downloads-as-dangerous/
For Android Devices:Open the Settings app on your Android device [1].Scroll down and select "Network & internet."Tap on "Data usage."Look for an option called "Download over Wi-Fi only" or something similar [1].Toggle off the "Download over Wi-Fi only" option [1].More items...
Source : https://poe.com/poeknowledge/1512928000281902