How to programmably perform windows update using WUA API with a msu file

Question

Hello,

I want to perform windows update using a *.msu file location and WUA API. I have found code where updates are fetched automatically in the following links

https://cplusplus.com/forum/windows/82125/

Also seen code where updates are searched ....but if I have the *.msu at a specific location can I use that file as an IUpdate handle?

Answer 1

Hello there,

Unfortunately librarys like Microsoft.Deployment.WindowsInstaller.dll dont work with MSU files so we're out of luck with the "off-the-shelf" options. Therefore you have to do it manually with code and the (msu.xml) XML file:

<Updates>
  <UpdateIdentity UpdateID="E6CF1350-C01B-414D-A61F-263D14D133B4" RevisionNumber="1" />
  <Properties UpdateType="Category" />
  <ApplicabilityRules>
    <IsInstalled>
      <True />
    </IsInstalled>
  </ApplicabilityRules>
  <UpdateIdentity UpdateID="2bf7ed9c-6f43-493a-b156-db20f08c44c4" RevisionNumber="101" />
  <Properties UpdateType="Detectoid" />
  <Relationships />
  <ApplicabilityRules>
    <IsInstalled>
      <b.RegSz Key="HKEY_LOCAL_MACHINE" Subkey="SYSTEM\CurrentControlSet\Control\Nls\Language" Value="InstallLanguage" Comparison="EqualTo" Data="0409" />
    </IsInstalled>
  </ApplicabilityRules>
  <UpdateIdentity UpdateID="6AECE9A4-19E3-4BC7-A20C-070A5E31AFF4" RevisionNumber="100" />
  <Properties UpdateType="Detectoid" />
  <Relationships></Relationships>
  <UpdateIdentity UpdateID="3B4B8621-726E-43A6-B43B-37D07EC7019F" />
  <ApplicabilityRules>
    <IsInstalled>
      <b.WmiQuery Namespace="root\cimv2" WqlQuery="SELECT Manufacturer FROM Win32_ComputerSystem WHERE Manufacturer = 'Dell Inc.' or Manufacturer = 'Samsung Electronics' or Manufacturer = 'Hewlett-Packard' or Manufacturer = 'Gateway'" />
    </IsInstalled>
  </ApplicabilityRules>
</Updates>


Hope this resolves your Query !!

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