Hello, @itwasonlyabug
Users can get deactivated automatically based on the following circumstances in your case:
- Gitlab authentication is disabled from System Console.
- Through user or System Administrator interaction (for example, users are allowed to deactivate their account)
- Some sort of automation/provisioning from outside.
Since you were able to narrow down that the issue is now only happening for A&B users versus C&D, let us dive deeper to understand the differences between these two sets of user groups. Do you observe anything obvious between them?
Additionally, can the deactivated users still login to Gitlab based on the article I came across here?
Deactivating a user is functionally identical to blocking a user, with the following differences:
- It does not prohibit the user from logging back in via the UI.
- Once a deactivated user logs back into the GitLab UI, their account is set to active.