If your VertiGIS FM environment is configured for single-sign on with OAuth, a Login with OAuth button appears on the VertiGIS FM sign in screen.

Log in with OAuth Button
If you click Login with OAuth, you will be asked to authenticate with your Windows credentials and then logged into VertiGIS FM automatically.
Refer to OAuth for more information about how to configure your VertiGIS FM implementation for OAuth sign in.
Instead of navigating to the sign page and clicking Login with OAuth, you can add the parameter below to the URL of the sign-in screen for your VertiGIS FM environment. Navigating to this URL bypasses the sign-in screen and takes you directly to the Windows authentication prompt.
__EVENTTARGET=LoginWithOAuth

Log In URL with OAuth Parameter
Bookmark the sign-in page URL with this parameter to bypass the sign-in screen when authenticating with OAuth.