Using aspnet_regiis...

under %windir%\Microsoft.NET\Framework\v2.0.50727
or v1.1.4322. aspnet_regiis command can be used to install or update frameworks

When I need to choose ASP.NET Versions between v1.1 and v.2.0 on ASP.NET tab of Default Web Site Properties in IIS Manager but I can't see v1.1 so that I used the command to install v1.1.

> aspnet_regiis -i

By the way when I use the command with -lv parameter, I can see the output below

1.1.4322.0 Valid ...
2.0.50727.0 Valid (Root) ...


The problem is that I want to switch Root to v1.1 and there is a way to do it.

> aspnet_regiis -sn W3SVC/ (means default:Root)
sn : install scriptmaps for this version at the specified path, non-recursively

after that you could see the changes and using sn option, you can change scriptmaps by site. ie) -sn W3SVC/1/ROOT, W3SVC/3/ROOT ...

plus, -lk option with the command you can see IIS metadata keys affected