How does Ubuntu suddenly not go to the net?

Home and want to see the program. Open the virtual machine VM on the WIN8 and start Ubuntu ...... ..... ..... ..............

Wait for the interface as usual, enter password, and then change the program ...

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When everything is ready, you are ready to compile the project and suddenly get to the network. What is wrong? The first time I met ...

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Right-click My Computer. Management/Services, see VMware-related services, VMware authorization service, VMware DHCP service. The VMware NAT service is not started. Problem found, it is simple, choose to start, and then set the Startup method is also the initiative, so that the next time the switch machine on its own initiative to start.

Continue to coding ....... .....................

How does Ubuntu suddenly not go to the net?