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Script Repository

Revoke permissions for user home folder

September 29, 2021 Views: 637

The script updates permissions for the target user home folder to keep only full access for the user themselves and inherited permissions. To execute the script, create a custom command, business rule or scheduled task configured for the User object type.

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PowerShell
try
{
    $folderPath = $Context.TargetObject.Get("homeDirectory")
}
catch
{
    return
}

# Get ACL object
$aclObject = Get-Acl -Path $folderPath

# Get rules
$rules = $aclObject.GetAccessRules($true, $false, [System.Security.Principal.SecurityIdentifier])

# Get user SID
$userSidBinary = $Context.TargetObject.Get("objectSid")
$userSid = New-Object System.Security.Principal.SecurityIdentifier($userSidBinary, 0)

# Check rules
$addRuleForUser = $True
foreach ($rule in $rules)
{
    if ($rule.IdentityReference -ne $userSid)
    {
        $aclObject.RemoveAccessRule($rule)
        continue
    }
    
    if ($rule.FileSystemRights.HasFlag([System.Security.AccessControl.FileSystemRights]::FullControl))
    {
        $addRuleForUser = $False
        continue
    }
}

if ($addRuleForUser)
{
    $rule = New-Object System.Security.AccessControl.FileSystemAccessRule($userSid, [System.Security.AccessControl.FileSystemRights]::FullControl, "ContainerInherit,ObjectInherit", "None", "Allow")
    $aclObject.AddAccessRule($rule)
}

try
{
    Set-Acl -Path $folderPath -AclObject $aclObject -ErrorAction Stop
}
catch
{
    $Context.LogMessage("An error occurred while updating folder permissions. Error: " + $_.Exception.Message, "Error")
}
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