This error may be caused by a recent Microsoft update that now enforces SSL security in Internet Explorer. You can try the following steps to work around it.
1) Open Internet Explorer (* required to run Banner INB)
2) Click the gear icon in the upper-right corner
3) Click on Internet options in the menu
4) Click on the Security tab
5) Click on Trusted Sites
6) Click the Sites button
7) Type http://greenapps.nsuok.edu, uncheck the box next "Require server verification (https:) for all sites in this zone", click the "Add" button, and then "Close".
8) Click OK to close the Internet Options and try to load greenapps in Internet Explorer again.