HI Gournis, welcome to the Umbraco community!

Which version of Umbraco are you using? If its the latest version (v4.5.1), was it for .NET 3.5 or 4.0? (so many choices!)

It sounds like there are configuration sections missing from the top of your Web.config file.  Try adding the following into the <configSections>:

<!-- ASPNETAJAX -->
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
    <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
        <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
        <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35">
            <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="Everywhere" />
            <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
            <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" requirePermission="false" allowDefinition="MachineToApplication" />
        </sectionGroup>
    </sectionGroup>
</sectionGroup>

Cheers, Lee.

thanks Lee Kelleher for your reply. i use the latest version that i download from the main page. on cassidi server.  By adding the above line, the message is change in:
-----------------------------------------------

Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error:

Line 116: </httpHandlers>
Line 117:
Line 118: <compilation defaultLanguage="c#" debug="false" batch="false" targetFramework="4.0">
Line 119: <assemblies>
Line 120: <!-- ASP.NET 4.0 Assemblies -->


Source File: C:\Inetpub\wwwroot\build\web.config Line: 118

Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3082

Perhaps ASPNETAJAX needs to be installed on the server? :)

i re-instal and  here is the new message:

Server Error in '/' Application.
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error:

Line 116:
Line 117:
Line 118:
Line 119:
Line 120:


Source File: C:\Inetpub\wwwroot\build\web.config Line: 118

Version Information: Microsoft .NET Framework Version:2.0.50727.3607; ASP.NET Version:2.0.50727.3082

Hi Gournis,

It still sounds like you have a mish-mash between the versions of ASP.NET on your machine.  Guessing that you need .NET 3.5?

Best bet is to re-download it from CodePlex, the 3.5 version is under "Other Available Downloads" (direct download here)

That will have the correct Web.config for you.

Good luck, Lee.

and yes Lee Kelleher, you are wright. thanks again all you guys that help me

uuups an other problem is arise:
no embeded database. only MySQL & Microsoft SQL server

no what;

(now what)

thanks Sascha Wolter very helpgull

I'm having the same Configuration Error (line 154) on my first attempt to install umbraco on my local w7 using ultidev cassini.

I have the following .NET frameworks installed on my box:

[v1.0.3705]
[v1.1.4322]
[v2.0.50727]
[v3.0]
[v3.5]
[v4.0.30319]

and below is a snap shot of my C:\Windows\assembly

System.Web 2.0.0.0 b03f5f7f11d50a3a x86
System.Web.Abstractions 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.DynamicData 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.DynamicData.Design 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.Entity 3.5.0.0 b77a5c561934e089 MSIL
System.Web.Entity.Design 3.5.0.0 b77a5c561934e089 MSIL
System.Web.Extensions 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.Extensions.Design 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.Mobile 2.0.0.0 b03f5f7f11d50a3a MSIL
System.Web.Mvc 2.0.0.0 31bf3856ad364e35 MSIL
System.Web.RegularExpressions 2.0.0.0 b03f5f7f11d50a3a MSIL
System.Web.Routing 3.5.0.0 31bf3856ad364e35 MSIL
System.Web.Services 2.0.0.0 b03f5f7f11d50a3a MSIL

Gournis, what was your solution?

well, its wasnt really a solution but a way to go:

i end up with a host solution, since i went for vacation in a greek island, and i dont want to carry on my tower. just a small laptop is good enough.
I made  use of online microsoft instaler form my provider. its by far more simpler, but am sure you can use the localhost microsoft instaler.

to be tottaly honest, after i follow the advise from Lee Kelleher, everything was ok, but i try to avoid the localogost database thing.

Also the advise for the ready DB was really fine

is working on a reply...