I have tried every solution on this issue from re-installing it to checking virus or malware but firefox seems to keep losing tabs. I did notice how this issues started with me trying to press ctrl+F5 which seems to have messed Firefox up as well as Chrome broowser. I have also made sure its up to date too. Can anyone help please as it very annoying losing your tabs.. I thought again Id lost tabs but this time I tried pressing the ctrl+F5 and again strange but the tabs re appeared the screen also seems to go to teh left like its going to another monitor which I do not have any added onto this computer. I have also pined teh tabs and still lose them