During the installation of Microsoft Office SharePoint Server 2007 I encountered the following error message.

• Setup Errors: Setup is unable to proceed due to the following error(s): This product requires ASP.NET v2.0 to be set to ‘Allow’ in the list of Internet Information Services (IIS) Web Server Extensions. If it is not available in the list, re-install ASP.NET v2.0.

ASP.NET 2.0 already installed as required before I started the installation. To fix this problem follow the instruction below:

Go to C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727 and run aspnet_regiis -i

Verify the extensions in IIS Manager.