You will get this error message on your Azure Backups which used to take Azure hosted VMs backup.
This can be due to Azure VM agent communication issue or because of the high utilization of the Virtual machine or an Agent communication issue.
To fix this Backup issue you have to login into the Server and restart the,
COM+ System Application service.
Then you can restart the Windows Azure Agent service to refresh the environment.
Sometime you will get the below error. This means the service was hanged or currently used by an application which is having some issue.
You can get a downtime and restart the Server. This will cure this problem.
Then, once the server comes online, restart this “COM+ System Application” Service.
Let the backup run after that.