When Tableau Server uses Active Directory (AD) for authentication, group synchronization imports AD groups and assigns a minimum site role (e.g., Viewer, Explorer) to users in that group. This ensures users meet a baseline access level. The behavior for existing users during sync is:

If the user’s current site role provides more access than the minimum (e.g., Explorer vs. Viewer), their role remains unchanged.

If the user’s current role provides less access than the minimum (e.g., Unlicensed vs. Viewer), their role is upgraded to the minimum.

This preserves higher privileges while enforcing a floor. “Reduces access” means the minimum role is lower than the current role (e.g., Viewer vs. Explorer), in which case the existing role stays.

Option A (It will change to the minimum site role only if the minimum site role reduces access): Correct. The user’s role changes only if the minimum increases access (e.g., Unlicensed to Viewer); otherwise, it stays higher.

Option B (It will change only if the minimum provides more access): Incorrect wording. This is the inverse of the actual behavior—change occurs when needed to meet the minimum, not to exceed it.

Option C (It will always change): Incorrect. Existing higher roles are preserved.

Option D (It will never change): Incorrect. It changes if the current role is below the minimum.