Network Connection Failure

We've previously been able to access the network in-machine, but it no longer is able to. Any attempts to restore the Network Settings or changing the start or end IPs generates this error message:

There was a failure changing the IP address of the Parallels network adapter. The other network parameters have been modified successfully.​

Anyone have any ideas?

 

Hello Brenna,
Please follow the instructions given in this article to fix the issue.

 

Hi, take a look into the system log (/Applications/Utilities/Console.app). There could be an error "ERROR: invalid signature for com.apple.iokit.IONetworkingFamily, will not load".

If it is the case, then it means that some third party software is incompatible with El Capitan. Most likely it have copied its network driver to the improper location and broke the signing of the IONetworkingFamily package.

As a workaround either 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/
it shoud display only

post here the output, so I could say if there are anything wrong

2) another workaround is to disable some functionality of Parallels Desktop with 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

 

Howdy Elric,

I am having the same issue as Brenna.
The results of your first step with the terminal are:
AppleBCM5701Ethernet.kext IOEthernetAVBController.kext

AppleIntel8254XEthernet.kext Intel82574L.kext

AppleIntelI210Ethernet.kext mDNSOffloadUserClient.kext

AppleVmxnet3Ethernet.kext nvenet.kext

AppleYukon2.kext



Any ideas, this is driving me crazy.

 

I am having the same issues as Brenna.
I have followed all the steps of 8978 and they have not resolved the issue.
The ifconfig is attached as a png.

I have now spent many, many hours on this issue and it is driving me crazy.

Any other ideas?

 

Hi @RayGuy, please raise a support request here.

 

Hi,
The issue should not be present in the latest update of Parallels Desktop 11.
If you have the problem on Parallels 10, then likely the only solution is to reinstall the Mac OS. Note: this will leave all your personal data intact.