Error in Protocol Mapping While hosting a WCF service in IIS

I have face the same issue. By changing application pool .net framework from 2.0 to 4.o was solved my problem

For the issue with protocol Mapping, please ensure that the app Pool you are using for the IIS site is setup to use .net 4.

Amr,

This sounds like you may have permission issues in the folder you .svc is running from, please can you check and see if the following permissions are there:

• \IIS_IUSERS
• \IIS_IUSR ---If running webservice in Anonymous Mode

For the issue with protocol Mapping, please ensure that the app Pool you are using for the IIS site is setup to use .net 4, as from what I understand protocol mapping is only available in .net 4.

Hope this helps

I had the same issue, but finally figured out that you have to set the DEFAULT application pool to .Net 4.0, not just the Application Pool for the individual website.