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Quick commands (Windows)

Nameresolution via other server than default

nslookup somewhere.com some.dns.server

Get Windows client join status

dsregcmd /status

Get applied GPO status on Windows client

gpresult /h C:\LocalData\GPResult.html

Get RDS license status

(Invoke-WmiMethod -PATH (gwmi -namespace root\cimv2\terminalservices -class win32_terminalservicesetting).__PATH -name GetGracePeriodDays).daysleft
wmic /namespace:\\root\CIMV2\TerminalServices PATH Win32_TerminalServiceSetting WHERE (__CLASS !="") CALL GetGracePeriodDays

Rejoin device to Microsoft Entra ID

dsregcmd /forcerecovery

Restart Computer to BIOS/UEFI

shutdown /r /fw

Delete specific files recursive

$source = "<sourcepath>"
$fileextension = "<filextension>"
get-childitem $source -include *$fileextension | foreach ($_) {remove-item $_.fullname}

Run PowerShell as admin from different session

Start-Process PowerShell -verb runas

Get last reboot time

Get-WmiObject win32_operatingsystem | select csname, @{LABEL='LastBootUpTime';EXPRESSION={$_.ConverttoDateTime($_.lastbootuptime)}}

Set error action in PowerShell session

$erroractionpreference = "silentlycontinue"

Test network connection

Test TCP port

Test-NetConnection -ComputerName <youripaddress> -Port <yourport>
$ipaddress = "<youripaddress>"
$port = "<yourport>"
$connection = New-Object System.Net.Sockets.TcpClient($ipaddress, $port)
if ($connection.Connected) {
     Write-Host "Success" 
} else { 
     Write-Host "Failed" 
}

Test UDP port

$ipaddress = "<youripaddress>"
$port = "<yourport>"
$connection = New-Object System.Net.Sockets.UdpClient($ipaddress, $port)
if ($connection.Connected) {
     Write-Host "Success" 
} else { 
     Write-Host "Failed" 
}

Check if address goes through proxy

([System.Net.WebRequest]::GetSystemWebProxy()).getProxy("https://lucanoahcaprez.ch")

This returns an object containing the information about the connection. If the "Host" property does not contain the original requested URL, there is a setting on Windows present. This setting defines the Proxy and the address of the proxy can be viewed in the "Host" property on the response object of this command.

Manage Local Windows Groups

Add Microsoft Entra ID user to administrator group

$Email = ""
Add-LocalGroupMember -SID "S-1-5-32-544" -Member "AzureAD\$EMail"

Add Microsoft Entra ID user to remote desktop group

$Email = ""
Add-LocalGroupMember -SID "S-1-5-32-555" -Member "AzureAD\$EMail"

Open Windows Control Panel pages

Printer overview

explorer shell:PrintersFolder

Turn On/Off Windows Feature

optionalfeatures

Advanced System Properties

SystemPropertiesAdvanced

PowerShell Module Management

List installed modules

Get-InstalledModule

Manage Windows File System

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