Thunderbird : OAuth2 : blank page

Hi everybody

This midday, Thunderbird “lost” my access to my microsoft account ( school). When I try to obtain my token, FF open and y get the défault page of FF ( by example / Google)

Thus I stay without this token and I can open my mailbox.

I use a multi profile on ff, I chose à profile by default but nothing change

Version of TB is 153.0.2 (64 bits)

How can I force TB goes to the good site ?

Thanks a lot

I found a solution, change the default browser !

Chromium by example !

I reply to myself !