AD Connect Export Error - Enable Inheritance on AD Users via Powershell

I encounted a weird problem where Azure AD connect was having an issue doing password writeback on the users. I checked invoke-adsyncdiagnostics and inded there was an issue with Password Sync. 

​Looking into the issue, it was AD Objects that had inheritance disabled, in particular, users. 

​So this script allowed me to set the inheritance on the OU:
​
Function Set-Inheritance {
    param($ObjectPath)
    $ACL = Get-ACL -path "AD:\$ObjectPath"
    If ($acl.AreAccessRulesProtected){
         $ACL.SetAccessRuleProtection($False, $True)
        Set-ACL -AclObject $ACL -path "AD:\$ObjectPath"
        Write-Host "MODIFIED "$ObjectPath
    } #End IF
} #End Function Set-Inheritance
#Find user with AdminCount set to 1
$users = get-aduser -SearchBase "OU=YOUR_OU,DC=DOMAINNAME,DC=COM" -Filter {AdminCount -eq 1}
#Enable inheritance flag for each user
$users | foreach {Set-Inheritance $_.distinguishedname}

​​After this, no errors were appearing.