Hi,
…I go to blender.org
…I download the latest blender version on Mac
… I run and install the .dmg file
… I click on the blender icon on my desktop
And I am able to get in the blender application
… I close my computer
… The next day blender is not on my machine anymore
… and I have to rerun the .dmg file to install it again
Does anyone know why Blender keeps on disappearing from my machine ?
Thank you
I know nothing about Macs, but that sounds like over enthusiastic antivirus software or something. Check your logs.
It only happens with b!
It literally gets uninstalled 
Everything else on my machine works 
Could you tell us what steps you go through to install Blender from the .dmg?
Maybe try the portable version?.. no need to install. I know very little about macs.
Hello, @BR_RR. I just wanted to check in to see if you’ve had any success in figuring out your issue. I asked if you could clarify how exactly you were installing Blender because when I switched to Mac I had to learn a quirk about installing applications from .dmg files.
If you didn’t copy your Blender application to a permanent location, you may be running into an issue where either it is running from a temp location or within the disk image itself. At that point, once the .dmg is unmounted, those files are no longer accessible. Could you elaborate on what you do to install from the .dmg?
Hi Hunkadoodle,
Yes I figured it out.
Once the .dmg file is on your desktop you need to copy it in a folder location on your drive !
But then, you right click on the .dmg file and click on “info”.
Once in “info” screen you need to check off the locked checkbox or else Mac will remove it !
I licked the file and never had problems with this issue anymore!
Okay. I’m glad I asked. This seems to be what I struggled with a little bit as a newer Mac user. The way Blender is supposed to be installed on Mac OSX is described in the Blender manual here: https://docs.blender.org/manual/en/2.82/getting_started/installing/macos.html#install-from-dmg
Stable releases of Blender for macOS are distributed on disk images (dmg-files). To mount the disk image double-click on the dmg-file. Then drag
Blender.appinto the Applications folder.
So, you haven’t actually installed the Blender.app file to your system. Every time you double click it, you are making your system extract the contents of the compressed .dmg to a temporary location so you can run the software inside. I wouldn’t recommend running it that way. I’ve made a video of how to install Blender using the newly released version 2.83. I hope this helps!
Demo:
Awesome my friend … 
Thanks
Bob
I’m glad I could help!
Hi there,
This just helped me, too! Thank you so much, it’s very appreciated!