激活 Welcome screen 和 Fast User Switching:
1. 用管理員權限的帳號登錄,在control panel中,click User Accounts.
2. click "Change the way users log on or off."
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3. click Use Fast User Switching.
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4. Click Apply Options 保存設置
注意
在域中電腦不可以用 Welcome screen and Fast User Switching,而工作組中的電腦或單機才行