Add .svc in MIME type IIS7

1. Add application in IIS7
2. Right click+switch to Features view
3. Double Click on MIME type
4. From Actions--->  click Add

5. .svc and application/octetstream + Click OK
OR
(try from your side.)
1.) a. Cd %systemRoot%\Microsoft.Net\Framework\v3.0\Windows Communication Foundation\
b. ServiceModelReg.exe -i
c. ServiceModelReg.exe -r