Log in screen repeats.

Hi Nobuhiro, 

Welcome to Box Community and glad to assist! 

Can you please uninstall your current Box Drive application? 

Follow the instructions below to uninstall Box Drive

Windows:

1. Quit Box Drive
2. Uninstall the application in the Control Panel.

Before removing all traces of Box Drive from your machine, first ensure that all hidden folders are visible.
To view hidden files and folders in Windows:

1. In the Windows taskbar, open File Explorer.
2. At the top of the File Explorer window, click View.
3. In the View menubar, click Options and select Change folder and search options.
4. At the top of tthe Folder Options window, click the View tab.
5. In Advanced settings, check Show hidden files, folders, and drives.
6. At the bottom of the window, click OK.

To remove all traces of the Box Drive application from your machine:

1. Go to C:\ProgramData\Box and delete the Box subfolder.
2. Open Registry Editor and delete HKEY_LOCAL_MACHINE\SOFTWARE\Box\Box.
3. Go to C:\Users\[USER]\AppData\Local\Box and delete the Box subfolder.
4. Open Registry Editor and delete HKEY_CURRENT_USER\SOFTWARE\Box\Box.
5. If the machine has multiple user accounts, login using each user account and repeat steps 3 and  4.

Once you've uninstalled your Box Drive App, please  reinstall Box Drive. 

Hope it helps!

It does not works. I have the same problem even with a new Windows installation.
There is an infinite loop. The app shows that the web browser is gonna be open to finish the log in process, but then returns to the app screen. 
It' is impossible to use the desktop app. If i don't have a quickly solution i will change to other app...