OneDrive - Stuck on Signing in

Had an issue with OneDrive stuck on "signing in", this was an Azure AD Joined machine with an Azure AD Account.

Resolved the issue by running:

%localappdata%\Microsoft\OneDrive\onedrive.exe /reset

Went to Control Panel > User Accounts > Credential Manager > Windows Credentials and removed any “OneDrive” credentials.

Then ran:

%localappdata%\Microsoft\OneDrive\OneDrive.exe /background

and all is well again...