更新驱动提示拒绝访问

my6010236

安装三儿子的MTP驱动的时候提示拒绝访问。
错误代码
"WindowsUpdate_80070005" "WindowsUpdate_dt000"

日志文件：
[03/19/2012 21:53.27.527] WudfCoInstaller: ReadWdfSection: Checking WdfSection [Basic_Install.Wdf]

[03/19/2012 21:53.27.572] WudfCoInstaller: UMDF Service WpdFs is already installed - removing existing settings in preparation for setting new ones.

[03/19/2012 21:53.27.593] WudfCoInstaller: Configuring UMDF Service WpdFs.

[03/19/2012 21:53.27.633] WudfCoInstaller: ImpersonationLevel set to 2

[03/19/2012 21:53.27.653] WudfCoInstaller: Using "Win7" service configuration

[03/19/2012 21:53.27.726] WudfCoInstaller: Error setting new configuration for service WudfSvc - error(5) 拒绝访问。
.

[03/19/2012 21:53.27.740] WudfCoInstaller: Final status: error(5) 拒绝访问。

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求解~

my6010236

自顶一下。。。  郁闷啊。。。