这时向用户显示一个用户名/密码对话框。

The user is presented with a username/password dialog box.

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错误服务器或门户url是否因为用户帐户对话框中禁用由策略设置，推用户无法更改设置。

If the wrong server or portal URL is pushed by a policy setting, users cannot change the setting because the user Accounts dialog box is disabled.

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用户帐户对话框中高级设置将不可用。

Advanced Settings in the User Accounts dialog box will not be available.

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