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The path to fixing Windows Update Service

I often need to trouble shoot Windows Update issues. I have found that some of the following things are useful to know in regards to trouble shooting:

Review this KB How to troubleshoot common Windows Update, Microsoft Update, and Windows Server Update Services installation issues

Try looking at WindowsUpdate.log (click for more info)

Use wuauclt.exe tool to force the update detection
MS Page for wuauclt utility
Yet another incomplete document

Create the required DWORD values from table below:
Value: NoAutoUpdate

  • 0 – Enable Automatic Updates (Default)
  • 1 – Disable Automatic Updates

Value: AUOptions

  • 2 – Notify for download and notify for install
  • 3 – Auto download and notify for install
  • 4 – Auto download and schedule the install

Value: ScheduledInstallDay

  • 0 – Install every day
  • 1 to 7 – Install on specific day of the week from Sunday (1) to Saturday (7).

Value: ScheduledInstallTime

  • 0 to 23 – Install time of day in 24-hour format


Note: I finally decided to run strings.exe (click for more info) against the exe and here is the list of the flags I found (you can guess what they are for:)


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