Server Error in '/' Application.

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[HttpException (0x80004005): The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'C:\WINDOWS\Microsoft.NET\Framework\v4.0.30128\Temporary ASP.NET Files'.]
   System.Web.HttpRuntime.SetUpCodegenDirectory(CompilationSection compilationSection) +8993646
   System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags, PolicyLevel policyLevel, Exception appDomainCreationException) +189

[HttpException (0x80004005): The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'C:\WINDOWS\Microsoft.NET\Framework\v4.0.30128\Temporary ASP.NET Files'.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +8961476
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +97
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +258