Hi,
It sounds like the environment is setup with multiple domains. Could you check confirm this? From what I understand, K2 will query the Active Directory provider to find the user. Is the user is still active in Active Directory, then it will show up in K2. Is it possible to disable the user with old domain from Active Diretory?
Hi Naina
In order to find the domain and resolve the issue, go to active directory delete the old user account and wait for 8 hours for k2 to refresh, after 8 hours check the old account if is still exist.
Please dont forget to mark this article as KUDOS and solution or KHUDOS only.
Regards
Elvis