Can't install from any dmg files on Macbook Air

Where did you download VLC from? you should download it from their site…

https://www.videolan.org/

Once downloaded, all you should have to do it double click on the dmg file then drag VLC over the Applications folder.

Try safe mode, see if it helps.

How to use safe mode on your Mac - Apple Support (Takes longer to boot)

Note: Safe mode prevents your Mac from loading certain software as it starts up, including login items, system extensions not required by macOS, and fonts not installed by macOS. It also does a basic check of your startup disk, similar to using First Aid in Disk Utility. And it deletes some system caches, including font caches and the kernel cache, which are automatically created again as needed.

thanks for using mac book.

1. Navigate to Finder.
2. Under Devices, open the root folder (default name: Macintosh HD).
3. Select the Library folder.
4. Open the Preferences folder and delete the following files: ...
5. Restart your Mac.
6. Restart the installation process and double-click the dmg installer.

[Edited by Moderator]

nisant666 wrote:

I downloaded the dmg from the videolan website itself. the dmg file is not opening as i stated above

Actually you never said the dmg wouldn't open. You said you couldn't install the dmg. But thanks for clarifying.

Thanks for posting this. I'm not sure that reinstalling MacOS is a viable solution for me as I am seeing this issue on several production machines. Might we pursue a solution that addresses the problem directly?

To be clear, are you reinstalling over the existing installation or erasing the partition first?