Win32Exception (0x80004005): Access is denied Error.

Hi All,
Need help urgently. I have the following code in my c# script:
foreach (System.Diagnostics.Process mBeforeExcelProc in mBeforeExcelProcs)
{
if (mBeforeExcelProc.ProcessName == "EXCEL")
{
mBeforeProcArray.Add(mBeforeExcelProc.Id.ToString());
}
}

It is giving the error mentioned in the title. It runs fine on windows2K, but give this access denied error in WindowsXP SP2. I am trying to capture all open .xls processes on the machine in the begining of the script, create an .xls spreadsheet and at the end close only this process, leaving all other .xls processes running.

Can it be that you are running on a limited windows account?

Oh, and use CODE tag for you code.

Thanks gecka for looking at it, but the user I am using is local admin. Could it be something to do with raised security levels on WinXP SP-2. Also this issue started only when I got new laptop. UserID and its privileges are same and is on same domain.

I found it. I just had to set the Impersonation right in the webconfig.

<identity impersonate="true" />