"Visual Studio.NET has detected that the specified Web server is not running a asp.net1.1 version. You will not be able to run a asp.net Web application or service solution to the problem

Asp.net|visual|web|web Service |web Server | program | solve | problem

The possible solutions are as follows:
1, first determine whether 1.1
2, the "IP address" set to all Unassigned
3, in the IE connection settings to the local address does not use proxy server where to tick
4. Operation Aspnet_regiis-i

1. Your Web server uses fixed IP: Make sure that your Internet Information service uses the "Default Web site" and that the IP address in its properties is "(All Unassigned)" Rather than the IP address you have specified. Then try again in return to Vs.net, which may be resolved.
2. When the above methods do not solve the problem, consider the solution in MSDN as follows:
Visual Studio. NET cannot determine if ASP.net version 1.1 is running on the WEB server computer. This error can occur in several different situations. Check to see if the following is the case:
Ensure that the. NET Framework version 1.1 is installed on the WEB server computer. For more information, see Visual Studio. NET Software requirements.
If ASP.net is already installed on the WEB server computer, but you still experience this error, it may be a configuration issue. To correct a problematic installation or configuration, you can use the ASP.net utility named aspnet_regiis. This command-line utility can be found in a path similar to the following:
C:\WINDOWS\Microsoft.NET\Framework\v1.1.nnnn\
where nnnn represents the four-bit build number. Look under the highest version number. Use the/I switch to run the utility:
aspnet_regiis/i
Prompts you to open the Command window directly from the correct directory of the command. From the Windows Start menu, point to Programs, Visual Studio. NET 2003, Visual Studio. NET Tools, and then select Visual Studio. NET command prompt. After the window is open, type aspnet_regiis/i.