This has always worked before. In fact, I can see that Windows is only trying to get the new photos. But no matter what I do, I just keep getting this: Sounds like your default storage location ...

Your system might have corrupt system image files which are causing this error. Run the System File Checker and DISM tools to repair the corrupt system image files ...

Re-registering or reinstalling the Windows Store apps is helpful if the apps refuse to launch or show several errors. Alternatively, you may try to Repair or Reset the Photos app via Settings and ...