Error -3403f

Hello ashish_bhardwaj,

Thanks for reaching out in Apple Support Communities. It looks like you're getting an error message, when you try to load macOS. We're happy to help. "A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the internet, but couldn't."

Check out the following support articles:

If your Mac starts up to error -1008F

If your Mac doesn't start up all the way

Cheers!

In Internet Recovery, these low negative thousands error messages indicate that your provided Wi-Fi Network is inadequate in some fashion, and cannot be used (for this purpose) in its current state.

Common problems include:

Hidden Network-name

required use of a proxy server to get Internet access

required use of a login page to get Internet access

Use of a login server or certificate to get Internet access

Use of PPPoE in the Mac to get Internet access (typically only applies to DSL)

Use of Fixed IP address rather than good old DHCP

Variance of the time by more than five minutes

Failure of Router to provide workable DNS server addresses, or providing 0.0.0.0 [may produce -2002f]

If you have an Ethernet port, you may in some cases be able to move your Mac close to the Router and connect to the Router using Ethernet.

The higher the number, the more obscure the problem.

If your battery was completely depleted, the Date&Time could have reverted to the default, which will not work. There is a terminal command to reset to current Internet Date&Time -- post back for assistance.

If your Mac starts up to error -1008F

https://support.apple.com/en-us/HT206989