ASP.NET网站打不开--在线等

以前没有问题，今天突然遇到了下面的错误，一查凡是aspx的，都打不开了！

Server Error in '/' Application.
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Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS0016: Could not write to output file 'c:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\ffa0aa16\d195cd89\App_Web_default.aspx.cdcab7d2.zzdx_04k.dll' -- '拒绝访问。 '

Source Error:



[No relevant source lines]


Source File:    Line: 0


Show Detailed Compiler Output:


c:\windows\system32\inetsrv> "C:\WINDOWS\Microsoft.NET\Framework\v3.5\csc.exe" /t:library /utf8output /R:"C:\WINDOWS\assembly\GAC_MSIL\System.WorkflowServices\3.5.0.0__31bf3856ad364e35\System.WorkflowServices.dll" /R:"C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\ffa0aa16\d195cd89\App_Code.d5ghm_5l.dll" /R:"C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\root\ffa0aa16\d195cd89\assembly\dl3\080a8d9e\00162396_ce5fc401\AspWebControl.DLL" /R:"C:\WINDOWS\assembly\GAC_MSIL\Syste