I am trying to publish a ASP.Net 3.5 site to an IIS 7.5 server using WebDAV and each time I do the config file winds up empty. The culprit is the providerOption elemet seen in the code below. \[code\]<system.codedom><compilers> <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="http://stackoverflow.com/questions/12680320/v3.5"/> <providerOption name="WarnAsError" value="http://stackoverflow.com/questions/12680320/false"/> </compiler> <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="http://stackoverflow.com/questions/12680320/v3.5"/> <providerOption name="OptionInfer" value="http://stackoverflow.com/questions/12680320/true"/> <providerOption name="WarnAsError" value="http://stackoverflow.com/questions/12680320/false"/> </compiler></compilers>\[/code\]The FX_schema.xml file at C:\Windows\System32\inetsrv\config\schema is being used to validate the Web.config for the site and it doesn't contain providerOptions as part of the XML there. I could add something to allow for that modify the file to allow for it by adding something like this:\[code\] <collection addElement = "providerOption"> <attribute name = "name" required = "true" isUniqueKey = "true" type = "string" /> <attribute name = "value" required = "true" type = "string" /> </collection>\[/code\]But I don't have any permissions to write to the schema file. This also looks like something others should be seeing and a quick search found some people are. The only option I have seen is "Just delete the codedom section" which means 3.5 things, like LINQ, will not work so that is a non-starter.So how do I publish my Web Site to IIS 7.5 with the providerOption elements intact?