Known java issue when launching Banner and user receives a blank (white) screen with a red error in the left corner.

This usually indicates that the TLS settings in java are incorrect.
Fix
Launch control panel

Click on Java (32-bit)

Click on the "Advanced" tab
Scroll down to "Advanced Security Settings

Uncheck "Use TLS 1.1" and "Use TLS 1.2"

Click "Apply"
Navigate to the Security Tab

Under “Exception Site List” add https://banner2.uco.edu and https://banner.uco.edu
Click “Edit Site List”
On some versions a new window will pop up.

Click “Add”

Enter: https://banner2.uco.edu and https://banner.uco.edu

Click “OK”

Click "OK"
Close all Internet Explorer (IE) browser(s) and go to banner.uco.edu again.

Click "Run"
Log in screen appears

Log in