Cannot run DCU succesfully from a SCCM Task Sequence

I am trying to provide a Task Sequence in SCCM so users can run Dell Command Update themselves.

I have created a short script to do so:

start /wait ""  "C:\Program Files (x86)\Dell\CommandUpdate\dcu-cli.exe" /import /policy C:\ProgramData\Dell\CommandUpdate\MySettings.xml
if %ERRORLEVEL% == 0 goto RUNDCU
    else goto QUITTASK

:RUNDCU
"C:\Program Files (x86)\Dell\CommandUpdate\dcu-cli.exe" /log C:\ProgramData\Dell\DCU.log /silent

:QUITTASK
exit /b %ERRORLEVEL%

the script works fine when i run it manually and DCU installs updates but when i run it from SCCM it errors out:

 

  
   Diagnostic
  

  
   2019-01-15T12:51:53.8442829+01:00
  

  

  
   Enter function
  

  

   
   
    2
    
   
    True
    
   
    Usage: invcol [OPTION]... Options: -? for help [-outc=
    
     ] output xml file [-logc=
     
      ] error log xml file [-lang=
      
       ] [-enc=
       
        ] UTF-8 or UTF-16 [-ver] Displays version of all inventory modules [-type=
        
         ] hotplug or other type [-cfg=
         
          ] IC config file [-tc=1 to 10] Number of threads to be spawned. [-tp=1 to 3] 1 = low priority or 2 = normal priority or 3 = high priority [-list] Extract the configuration file [-sic -outc=
          
           ] output xml file for Static Inventory Collector 
          
         
        
       
      
     
    
    
  

 

 

  
   Normal
  

  
   2019-01-15T12:51:53.8662182+01:00
  

  

  
   CLI: Error: Check for updates ended. (System Scan failed)
  

  

  

 

 

  
   Diagnostic
  

  
   2019-01-15T12:51:53.8851674+01:00
  

  

  
   Scan Completed: Exited Normally:True with exit code: 2