If a login page from a cloud service is not correctly displayed in the TWebBrowser control, you can force your app to use a newer emulated IE version in the Windows registry by adding the executable name at the following location in the registry:

HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER
\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION

Detailed information can be found here: https://msdn.microsoft.com/en-us/library/ee330730(VS.85).aspx#browser_emulation