There have been so many changes and additions to Windows 10, I can't keep track of them all. I ran into an issue with Microsoft Edge opening the startup tabs but not loading the pages and being completely unresponsive. After a quick search, I discovered Repair\/Reset was added with the Windows 10 Fall Creators Update (version 1709) and it is easy to use.\n\n Click Start (Windows icon) > the Settings icon and select Apps > Apps and Features. \n Scroll down to Microsoft Edge & click it. \n Select Advanced options.\n Try Repair first and if that doesn't work, select Reset.\n\nIn my case, Repair didn't work but Reset did. The only thing I had to do after the repair was to re-activate the extensions.