This error message usually appears when you are running GIFTS Online in a private browser. When running in private mode it does not allow some features of GIFTS Online to run properly. The message indicates that you should not be running in incognito mode and that you need to have your history activated when running in Firefox.

Verify that your browser settings are set according to the Windows Configuration settings document located at the link below.

http://www.blackbaud.com/files/support/guides/microedge/giftsonline/GO_Config_Win.pdf