Hi, I have the exact same problem Right Now:
“CAB PR EXCESS CAB ALT”
Ext Pwt Avail while Airborn
Ground Connection wire attached to the plane
All doors closed
The only differences is: its not a second flight directly:
I did a Flight earlier and went perfect, I went back to homepage, took anouther livery and doing a completly different flight.
As you, I ave the FBW A32NX Dev Version.
Maybe an issue from FBW?
Regards, SkyLane
Happy to read that I was not the only one facing this…
(and I only experienced it once, in many many flights)
It is probably a bug in the FBW A320 or even in the underlying Asobo MSFS engine.
Can you confirm whether you disconnected manually the aircraft from ground power supply after starting the APU?
I have forgotten to do this some times, but I never found any issue afterwards during flight.
I’m sorry I forgot 
but I never had this issue before.
I have the same problem with the A32NX version 0.6.1 stable. I started the flight cold and dark. Before flying I turned off the external power. In my case there is no external power wire hanging from the plane. This is the result:
Delete the aircraft from your system and reinstall. Worked for me.
Looks like I found the culprit…
It is the Pushback Toolbar which I had installed and just began to use
(excellent tool, BTW: https://flightsim.to/file/15033/toolbar-pushback )
According to their changelog:
Version 1.1.0 June 05, 2021
# Update 1.1.0
** FIXED: Ground Power Unit cable was stuck to FBW A32NX causing cabin pressure issues.*
So that’s it, at least in my case…
The window got me tonight… accidental click on the sill is all it takes to unlock it. I couldn’t figure out why my FS2Crew FO kept saying “Are you sure about that?” during the Windows/Doors part of Below the Line. Silly me, I ignored it and around 11k all hell broke loose. lol
I know this is an old thread this is happening on my end now all windows are closed.
It started at su7. What was the way to fix it.
It’s happening to me as well. On dev version.
Solution? Thanks
Moderator input:
Turn off the “Ditching” button
выключите кнопку “ditching”
