Background is a little complex. We have been running Win 10 under the ESU, My wife had her box unintentionally do a Win 11 update. She then started a backup which then looked like it would take days, so she aborted it after a while and ran the procedure to revert to Win 10, which then completed successfully. I think she then rebooted and opened Firefox and all her prior windows were there and working, After a while they got slower and slower, so she closed Firefox, might have rebooted and restarted Firefox. She now has 37 windows that are all completely blank. There is a New Tab tab and now URL in any window,

Is there any way that would likely recover all those open windows? Or, at least the URLs of all the tabs?