@leocg said in Where can I obtain required passphase?:
most probably Opera is asking for your old Opera account password or your OS password.
"Opera account password" ≠ "Passphrase" and "OS password" ≠ "Passphrase".
I tried to insert "Opera account password" instead "Passphrase" - Opera didn't accept it.
In practice - it is impossible to save bookmarks in Opera after reinstalling of OS.