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Why do I get the error message ‘Compiler Error Message: CS1595’

Platform: ASP.NET| Category: Error Handling

This problem occurs because the C# compiler does not have permission to access the folders in the path to the mscorlib.dll assembly

To resolve this problem, modify the compiler definition for the C# compiler to include the /nostdlib option. The /nostdlib option prevents the import of the mscorlib.dll assembly, which defines the entire System namespace.
To include the /nostdlib option in the C# compiler definition on a computer, follow these steps:

  1. Open the Machine.config file, and then locate the section.
  2. In the definition for C#, add the compilerOptions attribute with a value of /nostdlib.
    For example:

    
    <compiler language='c#;cs;csharp'
             extension='.cs'
             type='Microsoft.CSharp.CSharpCodeProvider, System,
             Version=1.0.3300.0,
             Culture=neutral,
             PublicKeyToken=b77a5c561934e089'
             warningLevel='1'
             compilerOptions='/nostdlib' />
    

    For more details refer PRB: ‘Compiler Error Message: CS1595’ Error Message When You Use the C# Compiler to Compile an ASP.NET Resource

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