The status code returned from the server was 12029

Figure 1: Ajax exception

This error code coming from Microsoft Win32 Internet (WinInet) API, which provides abstracts the protocols into high level interface.

12029       ERROR_INTERNET_CANNOT_CONNECT
               The attempt to connect to the server failed.

Useful links:

1. http://forums.asp.net/t/1129622.aspx
2. http://support.microsoft.com/kb/193625

BizTalk Event Log error: The source was not found, but some or all event logs could not be searched.

My BizTalk development machine runs on Windows 7. In an orchestration I've wrote
System.Diagnostics.EventLog.WriteEntry("Payment Automation","Instantiated the Process Engine");

When it runs, i can see following error in the event log. But I wont get this in Windows 2003 R2 server.

Figure 1: Windows Event Log

Event Type: Error
Event Source: XLANG/s
Event Category: None
Event ID: 10034
Date:  8/26/2010
Time:  9:27:29 AM
User:  N/A
Computer: 
Description:
Uncaught exception (see the 'inner exception' below) has suspended an instance of service 'Brandix.EAI.Orchestration.PaymentAutomation.BrandixPaymentAutomation(7e9e7bc9-558e-8988-7478-6552f648a021)'.
The service instance will remain suspended until administratively resumed or terminated. 
If resumed the instance will continue from its last persisted state and may re-throw the same unexpected exception.
InstanceId: b4472198-88f8-458f-aee3-aaa272d327ee
Shape name: Event Log Entry
ShapeId: 33391213-fc37-4d3a-91d7-f5f7bd50b667
Exception thrown from: segment 3, progress 3
Inner exception: The source was not found, but some or all event logs could not be searched.  Inaccessible logs: Security.
        
Exception type: SecurityException
Source: System
Target Site: Microsoft.Win32.RegistryKey FindSourceRegistration(System.String, System.String, Boolean)
The following is a stack trace that identifies the location where the exception occured

To avoid this error we have to do following steps.

1. Run RegEdit.exe
2. Expand hives to the level of following
   Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\EventLog\Application
3. Insert a new key to the Application hive, in this case "Payment Automation"
4. Insert a new String Value called "EventMessageFile" under the "Payment Automation"
5. Double click on "EventMessageFile" set Value Data as "C:\Windows\Microsoft.NET\Framework\v2.0.50727\EventLogMessages.dll"

Final windows registry editor will look like this,

Figure 2: Windows Registry Editor