@leocg I just checked it and I do not have this folder inside of my Opera stable folder %APPDATA%\Opera Software\Opera Stable\Sessions ...

There is no "Sessions" folder ...

Which probably means that everything is gone if I close my browser again.

@leocg no, it was gone after windows upgrade

@leocg after this happened there was no session folder created anymore and probably that is the reason why I am still afraid of closing Opera or restarting my PC.

"Retain tabs from previous session" ignored, all tabs lost on every restart.

Anybody else with this problem?