Virtual Network unavailable: No network adapter on Mac

@Elric
Kudos! Reinstalling OSX from Recovery Partition worked like a charm here, thanks a lot.
Didn't know that this option just replaces all system files without changing anything else - always used Time Machine successfully with any other problem.

@DennisM5
Yep, found the same, thus I wondered. Only csrutil disable is available nowadays it seems.
 
Hi, my technology level is a little bit lower than the other posters. I have been watching the discussion with acute interest, if not completely understanding it all. However, it appears that to solve this problem one must reinstall OSX from the Recovery Partition? For me, this is a rather extreme step on an otherwise working machine. If I were not to do this, then would I be fooling myself if I were to sit and wait for a solution to evolve through an update or something similar? Thanks.
 
@simonmason:
Restoring OSX from Recovery Partition was my first time now. I just tried it, because I have a working time machine backup available.
The Process takes some time (like restoring from time machine 1-3hours): Afterwards everything was the same in my system: all files, all application, all special drivers, all special tools, all configuration, everything. Just the error vanished.

So I'd suggest, just make a regular backup and give it a try. My "technology level" is quite high and I wasted ~12 hours on other solutions because I thought this "poor mans solution" would be inferior.

To explain the other option: SIP is System Integrity Protection. This forces your System to only allow drivers, which are certified to be good. However our problem here is that somehow certification checks are corrupted. Disabling the protection will solve the problem, however your system is unprotected then, that's why I wouldn't recommend this as a solution.
 
I believe that some third party software have installed its kernel extension (likely for some hardware network device) to the /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/ and have corrupted the signing of the IONetworkingFamily.

My current view of the problem is the next:
Long time ago (like in 10.6), the OSX required to install hardware network drivers to the IONetworkingFamily.kext/Contents/PlugIns/. This have changed since (as far as I remember) in OSX 10.8, but since all continued to work, that doesn't bothered drivers providers. Now OSX forbids this path for third-party network drivers.

There are two possible solutions: a) remove the software that corrupts the IONetworkingFamily and ask that company to fix the problem or b) disable network interfaces vnic0 and vnic1 on host (this doesn't affect most customers of Parallels Desktop).

As a workaround (a) delete the incompatible driver with the steps:
1) start the /Applications/Utilities/Terminal and execute the command
ls /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns/
On my machine it displays the next:
$ ls /System/Library/Extensions/IONetworkingFamily.kext/Contents/PluggIns/
AppleBCM5701Ethernet.kext AppleIntelI210Ethernet.kext AppleYukon2.kext Intel82574L.kext nvenet.kext
AppleIntel8254XEthernet.kext AppleVmxnet3Ethernet.kext IOEthernetAVBController.kext mDNSOffloadUserClient.kext
Click to expand...
If you aren't sure what to delete, post here the output, so I could say if there are anything wrong

For workaround (b) do the next steps:
1) Quit the Parallels Desktop
2) start the /Applications/Utilities/Terminal
3) execute command "cp /Library/Preferences/Parallels/network.desktop.xml ." (without quotes)
4) execute command "open /Applications/TextEdit.app network.desktop.xml" - it will open the Parallels Desktop network configuration in the editor
5) In all sections <ParallelsAdapter> change the value of field <Enabled> to be zero and quit the TextEditor, saving the file
6) execute in terminal command "sudo cp network.desktop.xml /Library/Preferences/Parallels/network.desktop.xml" - it will ask for the password. Please type it.
7) try whether it fixes the problem with networking in VM
 
Here is what I see when I run part a:

AppleBCM5701Ethernet.kext AppleYukon2.kext
AppleIntel8254XEthernet.kext IOEthernetAVBController.kext
AppleIntelI210Ethernet.kext Intel82574L.kext
AppleRTL815XComposite109.kext mDNSOffloadUserClient.kext
AppleRTL815XEthernet109.kext nvenet.kext
AppleVmxnet3Ethernet.kext

I tried the part b but it didn't seem to have any impact. I tried booting in shared and bridged mode. I found two entries in the file under </ParallelsAdapter>. Thanks for all of your help in trying to fix this.
 
simonmason said:
Here is what I see when I run part a:
AppleRTL815XComposite109.kext AppleRTL815XEthernet109.kext
Click to expand...

try to do remove the AppleRTL815XEthernet109.kext and AppleRTL815XComposite109.kext. Start the /Applications/Utilities/Terminal and execute three commands:
cd /System/Library/Extensions/IONetworkingFamily.kext/Contents/PlugIns
sudo rm -rf AppleRTL815XEthernet109.kext
sudo rm -rf AppleRTL815XComposite109.kext

then rebot the Mac and try whether this have helped
 
simonmason, would you like to establish a remote session with you in order to take a look on problem more closely? The session is possible 11.00-17.UTC working days. Post me a private message with your email address if you don't mind.
 
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