Fusion 12 Big Sur

Posted onby admin

Ok.. I’m so ecstatic.. a quick blog post must be written…

Fusion 12.1 Now Shipping Hot off the heels of macOS 11 Big Sur’s public release, today we’ve shipped an update to Fusion which addresses some compatibility issues, bring performance improvements, and even introduces some new features. MacOS 11.0.1 (Big Sur) Breaks VMWare Fusion 12 NAT After my system upgraded to MacOS 11.0.1 (Big Sur), VMWare Fusion 12 guests could no longer get to the internet after a VPN session had been established on the host (for example, a Windows 7/8/10 guest hosted on my MacOS 11.0.1 machine). While this is possible with Fusion 12.0 and macOS 11.0, there are many critical bugs fixed in Fusion 12.1 and macOS 11.1, so we recommend using those versions and newer. Note: This is an experimental feature and is not recommended for production VMs There are known bugs which may cause an immediate kernel panic of the VM (try connecting the. VMware Fusion 12 VMware Fusion delivers the best way to run Windows on the Mac, and the ultimate development and testing tool for building apps to run on any platform. Ready for macOS 11.0 Big Sur, Fusion 12 supports macOS 10.15 Catalina and includes new features for developers, IT admins and everyday users.

The Product manager of VMware Fusion, Michael Roy, had a classic “One More Thing” item in his VMworld presentation. The presentation was “What’s New with VMware Workstation and VMware Fusion”.

Vmware fusion 12 big sur

While running a Big Sur macOS guest, he showed “Metal Support” working without a hitch… Now we have been told for years that we cannot get 3D Acceleration in a macOS guest. Seeing this on the list of “things to come” was already pretty great. Something to look forward to.
During that same presentation he also showed the .vmx settings in order to get that working. Once the feature lands…

Who wants to wait?

Fusion 12 Big Sur Vpn

Vmware fusion 12 big sur nat

So of course, immediately after the presentation I had to try. No matter that it is only supposed to be working in a future version of VMware Fusion 12.0.
After adding the .vmx settings from the presentation I got a “Invalid configuration” error (or something along those lines).
OK, sad panda.
But … silly me did not look at the vmware.log file. Today I was poking Michael a bit on twitter and asking about how well Metal works on Big Sur beta 9 and that it is “so hard to wait” and he tells me “but you can try it yourself already”… 😮

OMG.. that’s when I realized that I had missed a detail..

It’s all in the details

Also my host wasn’t running Big Sur yet (I had only run it in a VM)
… so… next hour or so I was frantically busy installing Big Sur Beta 9 on my 2014 Mac Mini and YES… IT DOES WORK and it is SOOOO SMOOTH

This is the best thing since sliced bread.

Fusion 12 Big Sur Nat


THANK YOU VMware Fusion team!

In summary

This is not an officially released feature, treat it what it is: Experimental
Required: minimum of macOS Big Sur as host OS
Required: minimum VMware Fusion 12.0
Guest OS support: minimum of macOS Big Sur as guest OS (earlier macOS versions are missing the GPU paravirtual kernel extension for this – AppleParavirtGPU.kext. Unless apple steps in here and releases that for earlier macOS versions, it likely isn’t coming to earlier guest OS’s)
You have to add the following lines to the .vmx file of your VM in order to test this:
svga.present='FALSE'
appleGPU0.present='TRUE'
appleGPU0.screen0.width = '1680'
appleGPU0.screen0.height = '1050'

To be honest I don’t even have the lines with width and height, but that’s how you can define that for now.
It will only get better from here on once it is officially supported.

Update 2020/11/13: Another tip from Michael Roy (thanks Mike) is to update your VMware Tools to 11.2

Now that you are here. Please check out our product “Vimalin“. It has been designed for making your life easier to get good backups of your VMs. We support VM’s running in VMware Fusion, VMware Workstation and VMware Player.

Vmware Fusion 12 Big Sur Vpn

More info at our main page