FYI - Sharing incase this is helpful to anyone else in the future.
It turns out it's an IT related issue with a software transfer to a new tool which changed everyone's user names/ logins from caplocks letter to non-cap lock letters impacting users to being able to log in.
Once SSO implemented, the user has to go via SSO. Add / pull Workfront icon in SharePoint or your other login domain -->then update credential from outlook / office. Once you click Workfront icon, the user login is possible.
thanks for your reply. but it's been working for 6+ months and just today suddenly many users are having log in issues. what would be the cause? the SSO has already been implemented
I believe they must use SSO exclusively. The IT department can configure two different login methods: one via SSO and the other via the normal website login. It appears that they have transitioned to having only SSO as the login option for rest of users. It seems the other option has been removed. It's possible that these changes have been recently implemented, leading many users to encounter errors when trying to log in through the normal login page on Workfront.
Without knowing your specifics on the steps you use to access Workfront, it could be hard to troubleshoot. The steps I usually take when users are having access issues are:
1) Are they going through the SSO platform to get access or are they going directly to a URL to login
2) is the SSO email properly formatted in Workfront
3) Did they somehow lose access through your SSO platform?
If all those scenarios don't help, I typically work with my internal IT team that manages our SSO platform to help me troubleshoot.
FYI - Sharing incase this is helpful to anyone else in the future.
It turns out it's an IT related issue with a software transfer to a new tool which changed everyone's user names/ logins from caplocks letter to non-cap lock letters impacting users to being able to log in.