Engines dont turn on for B777-300ER

Hey so for some weird reason after pushback i tried to turn on my engines but they dint turn on…i tried multiple times…then i turn on my apu and try turning on my engines and it works completely fine…is the apu actually required to turn on engines?

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Yes,it is required!

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Hey! Yes the APU is necessary to start your Engines. But if you are flying an Aircraft which has not a APU you can start the engine if you have the Battery (master switch) on.
Hope this helps.

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Oh ok…thank you guys

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