KB: The following error occurred while saving message from the message box tracking spool. Class not registered

Today when I tried to save the tracked message in HAT, I had the following error:

The following error occurred while saving message from the message box tracking spool. Class not registered

The solution which worked for us is to restart the “Windows Management Instrumentation” service in the services tray.

HAT  uses WMI to query the MessageBox database. There can be two possible causes for this issue. Connectivity issue to the database or WMI. Since the message transmission is normal and its only the problem with HAT, we didn’t doubt the connectivity. Anyway to ensure that the things are right, we checked the MS-DTC setting as suggested here..http://msdn.microsoft.com/en-us/library/aa544733(CS.70).aspx .

Then WMI, in our case we have HP-Openview (like MOM/SCOM) to monitor the BizTalk environment and its agent service runs in BizTalk server to check the status of the server. We have some rules in Openview to monitor the status of the BizTalk artefacts like Orchestrations, receive locations , send ports etc. which uses WMI. Since Openview continuously polls for the BizTalk servers for the status the WMI services is battered. So for us recycling the WMI service (Windows Management Instrumentation) resolved the issue.

Errors List

In our day to day work, if we face any errors we either resolve the error by our experience or google it to find the correct solution. When you search for the correct solution often we find various potential solutions. So we go through each of them and apply the most suitable for our situation. Why not list the errors which I have encounters here. Instead of searching for the right solution why not first look here and see whether these solution which I have used sometime earlier when I had errors. This may not be useful to others, but might help me again in saving some time. So this is going to be a running list, I’ll update as when I encounter any errors.

Error	The following error occurred while saving message from the message box tracking spool. Class not registered
Cause	WMI service has been battered
Solution	Recycle the “Windows Management Instrumentation” service in the services tray
Reference	http://indway-is.blogspot.com/2010/10/kb-following-error-occurred-while.html

 

Error	Cannot load source/destination schema: “schema_name”. Either the file/type does not exist, or if a project dependency exists, the dependent project is not built
Cause	For some reason the BizTalk designer loses the schema reference and it is a little hard trying to “trick” the designer into remembering the schema’s location
Solution	Unload/load project of refresh the VS shell with the references.
Reference	http://sandroaspbiztalkblog.wordpress.com/2010/04/26/biztalk-mapper-cannot-load-sourcedestination-schema/

Error	Error <<Error Number>> Exception Caught: Mapper Compiler: Functoid not found: guid (<<GUID>>) with functoid id (<<functiod ID>>)
Cause	For some reason the BizTalk designer loses the schema reference and it is a little hard trying to “trick” the designer into remembering the schema’s location
Solution	Copy the custom functiod’s assembly to Drive:\Program Files\Microsoft BizTalk Server 2006\Developer Tools\Mapper And GAC the custom functiod’s assembly
Reference	http://social.msdn.microsoft.com/Forums/en-US/biztalkgeneral/thread/f9d43d64-84a3-4116-95cb-f4cca19a7d82

Error	sgen.exe exited with code 1
Cause	When you build the solution in release mode. Exact cause??
Solution	Remove the previous version of the assembly from the GAC
Reference	http://chrissyblanco.blogspot.com/2006/10/sgenexe-exited-with-code-1.html