diff --git a/scripts/install.ps1 b/scripts/install.ps1
index 36e272d..c25fbee 100644
--- a/scripts/install.ps1
+++ b/scripts/install.ps1
@@ -12,10 +12,11 @@ Copy-Item (Join-Path $SourceDirectory 'agent.exe') (Join-Path $InstallDirectory
 Copy-Item (Join-Path $SourceDirectory 'config.json') (Join-Path $InstallDirectory 'config.json') -Force
 $acl = Get-Acl $InstallDirectory
 $acl.SetAccessRuleProtection($true, $false)
-$admins = New-Object System.Security.AccessControl.FileSystemAccessRule('BUILTIN\Administrators', 'FullControl', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
-$system = New-Object System.Security.AccessControl.FileSystemAccessRule('NT AUTHORITY\SYSTEM', 'FullControl', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
+$administratorsSid = New-Object System.Security.Principal.SecurityIdentifier('S-1-5-32-544')
+$systemSid = New-Object System.Security.Principal.SecurityIdentifier('S-1-5-18')
+$admins = New-Object System.Security.AccessControl.FileSystemAccessRule($administratorsSid, 'FullControl', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
+$system = New-Object System.Security.AccessControl.FileSystemAccessRule($systemSid, 'FullControl', 'ContainerInherit,ObjectInherit', 'None', 'Allow')
 $acl.SetAccessRule($admins); $acl.SetAccessRule($system); Set-Acl $InstallDirectory $acl
 $command = '"' + (Join-Path $InstallDirectory 'agent.exe') + '" --config "' + (Join-Path $InstallDirectory 'config.json') + '"'
 schtasks.exe /Create /TN 'NetBox Windows Agent' /SC $Schedule /ST $StartTime /RU SYSTEM /RL HIGHEST /TR $command /F | Out-Null
 & (Join-Path $InstallDirectory 'agent.exe') --config (Join-Path $InstallDirectory 'config.json')
-