Hi All,
Recently the server running Live communication 2005, had a unexpected restart, and since that day I have not been able to start the Live Communication Service. When I try to manually start the service it show the following error message.

"Windows could not start Live Communication Server on the Local Computer, Fort more information review the event log. If this is a non-Microsoft service, contact the service vendor, and refer to service-specific error code - 2146762495."

When I check the Application logs on the event viewer I shows 4 errors as listed below.

1. Event ID 14397
A configured certificate could not be loaded from store. The serial number is attached for reference.
Extended Error Code: 0x800B0101.

Cause: This could happen if the certificate is not found. This could also happen if the server has insufficient privileges to read the certificate or to access the store containing the certificate.

2. Event ID 20482
Server could not retrieve its initial configuration for a class from the WMI Provider.
Class: MSFT_SIPRoutingSetting
Cause: This can occur if the connection to Active Directory or SQL back-end database is down or if permissions to the service account are altered. Retrieval can also fail if an invalid entry is entered in the class using the UI or WMI or if corruption occurs in local WMI repository.

Resolution:

Make sure the account the service is running under has proper privileges and that connection to Active Directory or SQL back-end database is functional. Verify an identical entry does not exist as a direct federation partner and an IM service provider.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

3. Event ID 16417
Unable to initialize the protocol stack. The service has to stop.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Unable to initialize the protocol stack. The service has to stop.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

4. Event ID 12299
The service is shutting down due to an internal error.
Error Code: 0x800B0101.

Resolution:

Check the previous event log entries and resolve them. Restart the server. If the problem persists contact product support.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

I have searched on the web extensively an could not find any solution for this problem up to now. I would appreciate if someone could hel me in resolving this issue.

Thanks,

JOHN