What happens when an administrator disables a member's account in ArcGIS Online?

When an administrator disables a member's account in ArcGIS Online, the member loses access to the organization. This action effectively removes the individual's ability to log into their account and interact with any organizational resources, including maps, apps, and datasets that are shared within the organization. Disabling an account is typically a measure taken for security reasons or when an individual is no longer part of the organization, ensuring that sensitive data remains protected and that access is limited to current members only.

Regarding the other options, it's important to note that disabling an account does not delete the member's training history, nor can the individual access shared content. Additionally, credits associated with the account are not automatically refunded just because an account is disabled; credits remain tied to the organization and are not linked to the account status of individual members.