This article applies to 123-reg Windows shared hosting packages.
This article will explain how to select the new version of ASP.net 4.0.
2
Scroll down to the Web Hosting section, select the relevant domain name from the drop-down box and click on the Manage button.
3
Click on the Change ASP.NET version icon.
4
Select the version of ASP.NET using the radio button and click Save change.
Please Note: We recommend that you back up your website files prior to upgrading from version 2.0 v to 4.0.