At the Parallels virtual machine start the following message appears and prevents the VM from connecting to the Internet:
Failed to open the Parallels networking module.
Permission issue on the Mac side.
Please go to Applications
► Disk Utility
and perform "Repair Disk Permissions
If the issue still persists, please apply this solution:
1) Shut down all running Virtual Machines
2) Start Applications ► Utilities ► Terminal
3) Execute the next four commands one by one (it will ask for your password. Please enter it. Note: typing will not be visible).
NOTE: It is recommended to just copy and paste these commands into the Terminal in order to avoid typing errors:
sudo launchctl stop com.parallels.desktop.launchdaemon
sudo chown -R root:wheel "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6"
sudo chmod -R 755 "/Library/Parallels/Parallels Service.app/Contents/Kexts/10.6"
sudo launchctl start com.parallels.desktop.launchdaemon