How can I get Edge to restore all the tabs I had open last session?

The "Open tabs from the previous session" option seems to be having no effect for me. With three tabs open, I close Edge with the X. When I reopen Edge, I'm back to just one homepage tab.

Fixed with a reinstall.

I am currently numb with shock. I lost dozens of tabs I needed to have open for reference. I never have more than one Edge window open and I've restored the tabs many times before but this time I didn't realise I had clicked on something that launched a popup new Edge window. Windows at this same time was acting weird with Edge open with all the tabs. So I closed the main Edge window using the red ✖ only to see the still open popup window. Closed that. Restarted Edge and can't bring back my tabs. This is a disaster. I can't seem to find the setting you're referring to close all Edge windows at once so this doesn't happen again. I'm still in shock.

I can't seem to find the setting you're referring to close all Edge windows at once so this doesn't happen again.

⋯ (Settings and more) > Close Microsoft Edge

Edge keeps a copy of the last session; if you haven't closed the browser since discovering that your tabs were missing, it may be possible to find them again.

A good solution was to Add all tabs to new collection, but that seems to have gone away.

edge://quit and Close Microsoft Edge both result in only one window worth of tabs re-opening. I guess I should feel lucky that it looks like the previous state of the un-restored windows are even recorded. This is a pain because of how simple it should be, reboot computer or have an edge update... and then when you open edge everything should comes back, all tabs in all of their windows. Why is this so hard? The "shiny metal" browser can do this, I just tried.

Based on the whole each window is a session thing, they could have a more descriptive popup when you try to close one of the windows, close window, close all edge windows (this is the one to use when we want them all restored), cancel, and an option to always do whatever non-cancel option the user chooses. And then make sure that when the close all windows option is used, it restores them all instead of the current behaviour.