MSFS 24 Campaign first flight error 307-400-00401

User Support Hub Install, Performance & Graphics
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1

Hi everyone,

I’m consistently encountering an issue during career mode and its First flight which breaks the Career completely and loops me back to HQ.

Brief description of the issue:
You select your first mission through HQ > Missions> First flight > Accepts mission> Fly > > and during the load of the airplane “Unexpected error occurs”
Developer mode cannot be enabled in settings to check some deeper things like pointing to a proper airplane (in my case mission wishes to use Viking Air Limited, a De Havillan DHC-2). And there’s nowhere to change it.

Provide Screenshot(s)/video(s) of the issue encountered:

ee
ee936×463 44.3 KB

Detailed steps to reproduce the issue encountered:
(see above)
Please state your Graphics Card Driver Manufacturer (NVIDIA, Intel, AMD) and Version
Nvidia 4070ti Studio driver 566.14

Build Version # when you first started experiencing this issue:
1.1.7.0

Note I’m aware of (Msfs 2024 error code "307-400-00401") but OP didn’t post how they resolved it and we are apparently multiple people with same issue.

2

Count me in. Lost all the progress I had made. This is ridiculous.

3

i have the same problem 2 days now
"an unexpected error occured and you can not continue this mission. You will be redirected to the last place you were.
error code : 307-400-00401
my platform is xbox series s/x

4

Same here, same error

5

Same, VGA 4070ti

6

I’m following up with MSFS support in regular support case. I’ll update here once I know anything relevant.

1 Like
7

Hi all, I have the same problem (Xbox Series X)

IMG_2570
IMG_25702268×4032 613 KB

8

This is happening for me too except i am a little more advanced in the career. It happened when i started a ferry flight, reported my plane had crashed. I restarted the mission then got this error and i got dumped back to HQ and lost as whole lot of experience.

Took another flight, 70NM trip, and half way in i got the unexpected error and it dumped me back to HQ. Flights have been fine up till now, i am about level 7 and have two certs.

9

Hi guys, support suggested me something which worked for me.
Flush your DNS.

Within PC it’s as follows:

  • Open an administrative command prompt window as an administrator
  • Type ipconfig /flushdns and hit Enter
  • You should see – Windows IP Configuration. Successfully flushed the DNS Resolver Cache
  • Exit CMD
  • Your DNS cache should have been reset.
  • Restart your computer
  • Run MSFS 24 as normal. Error should be already gone.

You’ll have to find the way for xbox. I don’t know how that’s done.

10

I’m on Steam and this didn’t work for me. Anyone still having this issue?

1 Like
11

This solution did not work and the game is unplayable as it gives this error on every single flight.

1 Like
12

This didn’t work for me.

13

Didn´t work for me either.