Exchange branch does not appear / show in Backup Selections
E2007 GetStorageGroups failed with hr = 0x80004005 for machine = NULL
SGMon may also fail to run on Exchange server with error on access to the windows registry
Remote Agent is installed with partial rights to run.
Uninstall the Remote Agent on Exchange and then Reinstall it. (Reboot is not required. Recommended to reboot when able.)