This issue is only affecting a small group of clients who use the Single Sign-On ("SSO") login option to access the program. Most SSO configurations are still functioning properly (i.e., most organizations who use SSO are not encountering this error). Our engineers have confirmed that no changes have been made from our end with regards to Blackbaud Grantmaking (GIFTS Online) and its SSO functionality recently, so any organizations who have encountered this error are advised to consult with their local IT departments to have them refresh local SSO configurations to resolve this issue.