1. Open IIS
Click on start and then expand Administrative Tools and click on IIS.
2. Expand Sites
Expand the server name and then expand sites and click on Default Web Site.
3. Double click on HTTP Response Headers
Open HTTP response headers and then click Add on the left hand side.
4. Enter in the information
Enter in the name and value and then click ok.
5. Perform an IISReset
Click on start and the right click CMD and run as administrator and then type in IISRESET and press enter.