script to run google cloud directory sync in windows

GCDS.ps1

$msbuild = "C:\Program Files\Google Apps Directory Sync\sync-cmd.exe"
$arguments = "-a -o -c config.xml"
while ($true) {
    start-Process -FilePath $msbuild $arguments
    Start-Sleep -Seconds 600  
} 


<#
-a,--apply	
Specifies to apply any detected changes. 
Note: If you don't use this tag, a synchronization is run as a test only, and no changes are made to your Google domain. 
For the best results, run a test synchronization without this argument before running a full synchronization with it.
-c,--config file-name	
Specifies the XML configuration file to load.
Important: Synchronization won't occur without a valid XML file specified with this argument.
-o,--oneinstance	
Restricts the running synchronizations to one instance per configuration file. Only valid with -a.
This limits GCDS to a single instance per XML configuration file, which prevents multiple instances from running inadvertently (for example, through a scheduler or cron job).
config.xml references a file with all GCDS configurations located at C:\Program Files\Google Apps Directory Sync\config.xml
#>

I am doing expect the same but the logs returns oauth failed error