“Visual Studio .NET has detected that the specified Web Server is not running ASP.NET version 1.1. You will be unable to run ASP.NET Web applications or services.”
Published on November 27th, 2006 by DannyT. Filed under .Net, Visual StudioEvery time I’ve tried to install VS.net 2003 I’ve had to deal with this error, the solution is out there on many other sites but thought I’d put it here for my own reference.
Often when trying to create a web project in VS.net you’ll get the error:
“Visual Studio .NET has detected that the specified Web Server is not running ASP.NET version 1.1. You will be unable to run ASP.NET Web applications or services.”
To resolve this all you need to do is open a command prompt (Start, Run, Type “cmd” enter) and enter the following:
%windir%\Microsoft.NET\Framework\v1.1.4322\aspnet_regiis.exe -i
That should do it!

vams
January 16th, 2007 at 7:32 am
hello Mr.Danny,
i’m repeatedly facing with the above error , i did try with the above command but still the problem persists… can u plz help me over this..
thank u,
vams
DannyT
January 30th, 2007 at 7:22 pm
Hi Vams, we have a machine here with the same problem which I am looking into at the moment, will post the solutions as soon as we sort it, likewise if you figure it out please let me know.
Cheers,
Dan
Peter :)
February 2nd, 2007 at 2:19 pm
I had the same problem! that didnt fix it danny boy
Luckily i managed to fix it myself
DannyT
February 2nd, 2007 at 8:17 pm
by “fix it myself” do you mean resort to formatting your computer and reinstall from scratch?
Get back to work noob!
(Pete is a cheeky placement student here who is working towards his P45
)
Dave
May 12th, 2007 at 3:26 am
Danny, you are a super-star, i ran the regiis and it solved the issue. rock on and cheers
Karl
July 9th, 2007 at 2:08 pm
Did anyone find a solution for this if it isn’t fixed by the regis idea?
Manhar Trivedi
August 9th, 2007 at 9:50 am
For those who have got sick registering aspnet_regiis.exe -r and unregistering try out following
While starting a visual Studio web project give your application name as
http:///WebService1
and not http://localhost/WebService1
Angelo
August 22nd, 2007 at 2:47 am
Works for me!! Thanks much
JAGANMOHAN kRISHNAMOORTHY
October 22nd, 2007 at 10:51 am
THANKS PAL ,
%windir%\Microsoft.NET\Framework\v1.1.4322\aspnet_regiis.exe -i WORKED FOR ME.
naisioxerloro
November 29th, 2007 at 12:43 am
Hi.
Good design, who make it?