I just installed QuickBooks Pro 2019 for Windows. I haven't been able to restore my back up file. The software crashes when I select "Restore a Backup or Open a Company File." I never even get to select my company file or backup. I also created a portable file and tried that, but the software still crashes. I tried repairing the install which didn't work. Then I uninstalled and reinstalled and it didn't work either.
Thanks for your help. It ended up being a myriad of problems beginning with the fact that I was using Parallels for Windows on a Mac. I ended up having to wipe my Windows side, remove Parallels and revert back to BootCamp, reinstall Windows etc, including QuickBooks. There forward I didn't have anymore problems. All of this during the week before tax deadlines!