Message:

RadPortal login page immediately returns after logging in.

Note: No errors in red text display.

After logging into the RadPortal, the login page is immediately returned even though the credentials are entered correctly.

Note the colors on the page display differently than a normal RadPortal page.

This is caused by IE settings.

Ensure the page is in Trusted Sites/Local Intranet and that the page is set to be viewed in Compatibility Mode.