A Microsoft file hosting and synchronization service.
Please try resetting OneDrive by pressing Windows + R and typing: %localappdata%\Microsoft\OneDrive\onedrive.exe /reset
After that, restart your PC and try signing in again.
Also, since you’re able to sign in via the browser, could you confirm if you’re using any VPN or firewall that might be blocking the connection? If possible, please share the exact error message you’re seeing.