Normally when we host a WCF Service i9n IIS and while browsing we get the below frustrating screen

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Error message in above screen is very clear. We need to add MIME type for .SVC extension.

To solve above problem

1. Open command prompt as Administrator

2. Navigate to C:Windows\Microsoft.Net\Framework\v3.0

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3. Type the command

ServiceMode1Reg.exe –i

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Now MIME type has been registered for the .Svc extension and you should not face any problem , hosting WCF Service in IIS.

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2 thoughts on “HTTP Error 404.3 : WCF Hosted in IIS. Add a MIME type

  1. HI, I have that error, but I have Framework 4.5 and when i run ServiceModelReg.exe –i from framework4.5 directory it says that it is not supported in that widows plataform.. My Windows is 2012. Any Idea how can i solve that problem? Thanks

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