Microsoft's security policy recommends disabling fast user switching to reduce the risk of unauthorized access. Fast user switching allows multiple user sessions to remain active simultaneously, which can potentially leave a system vulnerable if one session is compromised.
Disabling this feature ensures that when a user logs off, the session is fully terminated, thereby reducing the security risk.
In the context of Cisco ISE and endpoint compliance, this recommendation aligns with best practices to enforce strict user session control and ensure that endpoints are fully compliant before granting network access.