Category Archives: Windows

Windows tips, howtos, scripts

Windows: Powershell script to fix and repair WMI

Hi,

this script repairs and recreates the WMI Repository of a Windows. For example, this occurs sometimes if you clone a Windows machine with an installed SCCM/SMS Client. The typical error in this case is “Failed to open to WMI namespace ‘\\.\root\CCM\SoftwareUpdates\DeploymentAgent’ (8007045b)”

Lasts start. Start a Powershell console as Administrator. Stop all services. Sometimes other services depends on the WMI Service and does not accept a stop request. Therefore you cannot stop the WMI service. TrendMicro Office is such a service. You have to kill them by TaskManager.

# Stop WMI
# Only if SCCM/SMS Client is installed. Stop ccmexec.
Stop-Service -Force ccmexec -ErrorAction SilentlyContinue
Stop-Service -Force winmgmt

(Re)Register WMI binary components

[String[]]$aWMIBinaries=@("unsecapp.exe","wmiadap.exe","wmiapsrv.exe","wmiprvse.exe","scrcons.exe")
foreach ($sWMIPath in @(($ENV:SystemRoot+"\System32\wbem"),($ENV:SystemRoot+"\SysWOW64\wbem"))){
	if(Test-Path -Path $sWMIPath){
		push-Location $sWMIPath
		foreach($sBin in $aWMIBinaries){
			if(Test-Path -Path $sBin){
				$oCurrentBin=Get-Item -Path  $sBin
				Write-Host " Register $sBin"
				& $oCurrentBin.FullName /RegServer
			}
			else{
				# Warning only for System32
				if($sWMIPath -eq $ENV:SystemRoot+"\System32\wbem"){
					Write-Warning "File $sBin not found!"
				}
			}
		}
		Pop-Location
	}
}

Reregister WMI Managed Objects
Continue reading Windows: Powershell script to fix and repair WMI

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Powershell: Check for Administrator rights

Hi,

for a lot of powershell scripts Administrator permissions are necessary. In powershell, you can check if you are elevated by the following script code.
Insert the snippet at the top of your script. It checks the credentials and exits the script if the administrator permissions are missing.
Continue reading Powershell: Check for Administrator rights

Windows: Change the Volume Serial Number of a partition or volume

Hi,

for some migration scenarios it is nesseccary to set Volume Serial Number of a partition or volume. For example when you move  a license manager to a new hardware and the licenses are bound to the disk serial.
Continue reading Windows: Change the Volume Serial Number of a partition or volume

Windows: Writing a new MBR an a USB Drive to boot Windows PE

Hi,

booting operating systems, such as linux live systems or Windows PE based installations (Windows Vista,7,8),  from a USB Drive or Stick is a nice featured.

Unfortunately each writes it own boot code to the MBR (Master boot record). The boot code of Windows PE 2 and later  loads \BOOTMGR, linux is usually loaded with \syslinux.

Well known linux installers like TUXBOOT, the Universal-USB-Installer or UNetBootin do updating the MBR by installing the syslinux bootloader.

To get the  Windows PE MBR back without formating the stick, do the following steps.
Continue reading Windows: Writing a new MBR an a USB Drive to boot Windows PE

Windows: Read the IP Address of a BMC Board

Most of the Serversystems have a Baseboard Management Controller (BMC) integrated for maintenace and management tasks.

Typical functions are, indepentend from the running operating system:

  • Shutdown and reboot
  • Switch Power On and Off
  • KVM (Keyboard, Video, Mouse) redirection
  • Hardware monitoring
  • USB redirection, connect the local DVD Drive to the Server over a LAN connection
  • and much more…

Usually, the BMC has its own LAN Interface and therefore an own IP Address.
Continue reading Windows: Read the IP Address of a BMC Board