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William_2019
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Could not open /dev/vmmon: Broken pipe.

Upgrade Macbook pro 10.15, the windows 10 does not open has error Could not open /dev/vmmon: Broken pipe..

any way can repair that.

THanks,

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wila
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Hi,

First thing to try is to reboot your mac.

If that doesn't work, how about telling us which version of VMware Fusion you are using?

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva

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wila
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Hi,

First thing to try is to reboot your mac.

If that doesn't work, how about telling us which version of VMware Fusion you are using?

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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William_2019
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Hello Wila, I use Version 11.5.0, and check the pricy has setup correct.

Thanks.

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wila
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Hi,

You would have to allow the kernel extensions from VMware.

With Catalina there's a bunch of things you have to allow nowadays.

If you already tried rebooting your host and that didn't help. Then the first thing i would try is to drag VMware Fusion to the bin/trash from /Applications and then install it again.

Still no good?

Have a look at this thread:

Re: New installation of Vmware fusion 11 pro on macos Mojave Could not open /dev/vmmon: Broken pipe

--

Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
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William_2019
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allow.jpg

issue fixed, thanks. click this allow button,

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PDS2020
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I have the same error message after restoring from Time Machine Backup. 

After reading some notes, I see the problem may be fixed by reinstalling VMFusion, however the download files are no longer showing in my products. I am using Version  11.5.7   #HELP

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wila
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Hi,

Download from here:
https://my.vmware.com/web/vmware/downloads/details?downloadGroup=FUS-1157&productId=798&rPId=55757

That however might still not fix the issue as apple changes their security rules every now & then.

Other people who recently posted this issue for 11.5.7 on macOS Catalina (or earlier) needed to do more.
AFAIK the following always worked:

Delete the /private/var/db/KernelExtensionManagement folder and reboot. After rebooting and starting VMware the folder will be recreated with the correct permissions.

--
Wil

| Author of Vimalin. The virtual machine Backup app for VMware Fusion, VMware Workstation and Player |
| More info at vimalin.com | Twitter @wilva
QualityX
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Solved! Putting the "KernelExtensionManagement" (/private/var/db/KernelExtensionManagement) in the trash (it will be recreated on reboot) and rebooting solves the issue on Mojave 10.14.6  / Vmware Fusion Pro 11.5.7

Root cause: System Integrity Protection prevents VMware Fusion from starting kernel extensions due to miss-configured permittions on "KernelExtensionManagement".
as the result you'll get error msg on attempt to start VM: "Could not open /dev/vmmon: Broken pipe. Please make sure that the kernel module `vmmon' is loaded"

I've tried all other solutions mentioned above, but non worked for me.

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