Failed to update Sophos Update Manager due to an unexpected error. Details: Insufficient parameters - Self-Updater improperly call

Question

One of our Update Managers is failing to update. Usually a reboot sorts it, but not this time. The Error in the event log is: Failed to update Sophos Update Manager due to an unexpected error. Details: Insufficient parameters - Self-Updater improperly called. Event ID 16433 
 On version 1.5.8.11

1heds · Accepted Answer

Got the SUM working again by following these instructions: 
 
 On the SUM Server: 
 
 1) Stop all the Sophos Services in this order: 
 
 Sophos Message Router service 
 SophosCertification Manager service 
 SophosAgent Service 
 Sophos Update Manager service 
 Sophos Managment service 
 2) Then please navigate down to this directory C: program files x86 > sophos 
 > enterprise console OR SCC > SUM or Update Manager 
 and delete these xml files 
 SUM_status.xml 
 SUM_status.xml~ 
 specialactions.xml 
 specialactions.xml~ 
 3)Clear the Envelopes 
 folder: \ProgramData\Sophos\Remote Management System\3\Router\Envelopes\ 
 4.)Rename working folder 
 "workingOLD" C:\ProgramData\Sophos\Update Manager\ 
 5.) Rename the Warehouse 
 folder as well as the CIDs folder "warehouseOLD" & "CIDsOLD": 
 C:\ProgramData\Sophos\Update Manager\Update Manager\Warehouse 
 6.) restart all the sophos services in this order 
 Sophos Message Router service 
 Sophos Certification Manager service 
 Sophos Agent Service 
 Sophos Update Manager service 
 Sophos Managment service 
 7.) restart the console go the update manager right click on the appriopriate SUM and choose view edit configuration and then in the "sources" tab please remove the sophos entry 
 add the Sophos entry back in 
 add the EM/Sophos Username-password 
 hit ok 
 8.) you should now see the SUM status as downloading binaries, once this is done 30 to 45 mins, your SUM will be working fine and error will go away.