Why is IIS failing to read the web.config

Ck Nitin

Why is IIS failing to read the section even though ASP.NET 4.5 is installed?

IIS fails to read the section in your web.config—even after ASP.NET 4.5 is installed—because IIS doesn't automatically know how to parse custom or extended configuration sections unless they’re explicitly declared in the block at the top of your web.config.

3 Replies

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Jignesh Kumar1y ago
Hello Nititn,

Which .NET Framework are you using?

Make sure you're targeting .NET Framework 4.5 or later in your application.
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IIS parses web.config from top to bottom. If you use custom or extended sections like without first declaring them under , IIS doesn’t know how to interpret them.

If your web config does not have the above section could you please add that one.
+1

Suresh M1y ago

Ensure that the block correctly defines

Format

Sangeetha S1y ago
1. Check your application pool in IIS:
  
  Make sure it's targeting .NET Framework v4.0 (or higher).
  
  If it's set to v2.0, it won't recognize the newer configuration sections.
2. Ensure the correct assembly is referenced
+1