Startup & Shutdown Problem

When I boot up my computer I get the following message:

Microsoft .NET Framework
Unhandled exception has occurred in your application. If you click Continue, the application will ignore this error and attempt to continue. If you click quit, the application will close immediately.

The remote server returned an error: (300) Ambiguous Redirect.

If I click on "Continue" or "Quit" the computer seems to run OK but when I go to shutdown the computer will not shut down. I have to manually hit the reset button or turn the power off at the back of the power supply.
(NOTE): I UPDATED .NET FRAMEWORK FROM THE MICROSOFT WEBSITE. NOW WHEN I CLICK ON "QUIT" I CAN REBOOT OR SHUTDOWN THE COMPUTER FROM THE START MENU. IF I CLICK ON "CONTINUE" I STILL HAVE TO PUSH THE RESET BUTTON OR TURN OFF AT THE POWER SUPPLY.

Below is the remainder of the message I get when I click on the "Details" for the above mentioned error message.
See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Net.WebException: The remote server returned an error: (300) Ambiguous Redirect.
at System.Net.HttpWebRequest.GetResponse()
at groupmanager.frmMain.WebConnect(String Server)
at groupmanager.frmMain.PollServer()
at groupmanager.frmMain.frmMain_Load(Object sender, EventArgs e)
at System.EventHandler.Invoke(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Form.OnCreateControl()
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WmShowWindow(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3082 (QFE.050727-3000)
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
groupmanager
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Program%20Files/Windows%20NT/svchost.exe
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 8.0.0.0
Win32 Version: 8.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Runtime.Remoting
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3082 (QFE.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Management
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.3053 (netfxsp.050727-3000)
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Management/2.0.0.0__b03f5f7f11d50a3a/System.Management.dll
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.

I appreciate any help anyone can provide.

Thanks in advance.

Rick

Hi ctdr11233, and welcome to BleepingComputer.

Try using the System Restore feature, choose a date prior to the time that this problem began.

Start> All Programs> Accessories> System Tools> System Restore.

When this opens make sure that "Restore my computer to an earlier time" is chosen, and click on Next>.
The dates appearing in bold are the dates that you can restore to, click on the date that you want and then click Next> to start the System Restore, you may get the message telling you that you will have to restart your computer to start, click ok. When the computer restarts and you have logged on as the administrator a Restoration Complete page will appear, click on OK to complete the process.

System Restore did not work at all. I got error messages about "groupmanager" and when I tried to open Internet Explorer it kept giving me the "Internet Explorer has failed to open" message over and over again. I had to go back to System Restore and undo the restore to get back to where I was in the first place with the .NET Framework error.

It seems that there are enough people that have had bad downloads of Net Framework that Microsoft has instructions for deleting it. You can find the instructions here. Uninstall it and try downloading it again.