Doc69
Enthusiast
Enthusiast

Security Update 2020-005 breaks Fusion 11.5.6 on Mojave.

Three times now, I have suddenly been unable to load my VMs in Fusion 11.5.6 because of the following message: "Could not open /dev/vmmon: Broken pipe. Please make sure that the kernel module `vmmon' is loaded". Only after reinstalling MacOS 10.14.6 have it started to work again. Today I finally figured out why, after it stopped woking again after installing Security Update 2020-005 and MacOS Supplemental Update. Does anyone have a solution for this? I'm getting tired of reinstalling MacOS.

I have previously posted in this thread: Re: Broken pipe problem in Mojave

And here are some additional info with another person having the same issue: https://mrmacintosh.com/10-14-6-supplemental-update-safari-14-released-to-fix-previous-issues/

1 Reply
TECH198
Hot Shot
Hot Shot

Yeah, don't install it

In the past, running Mojave, i had graphic issues wit VMWare Fusion, (at first i thought is was VMWare), but then i decided to clean installed MacOS and there was even confirmation that the security update 2020-002, (at that time), had  graphics issues using : Intel 6000 HD graphics users on Mac :

https://mrmacintosh.com/2020-002-update-causes-some-macs-to-freeze-when-using-hw-accelerated-video/

I know security updates make Mac secure, but if you know why it happens, there is a trade-off.

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