Assessment Failures - Azure Update Manager

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troubleshooting   azure

:bulb: Introduction

I had a case today where Azure Update Manager was showing errors regarding checks for assessments, upon checking the Windows Updates installed on the machine we noticed the updates were successfully installed.

:x: Error text

1 errors reported. The latest 100 errors are shared in details. To view all errors, review this log file on the machine: [C:\ProgramData\GuestConfig\extension_logs\Microsoft.Software Update Management.WindowsOsUpdateExtension\1.telemetryLogs]. Failed to apply patch installation. Reason: [Failed to assess the machine for available updates: Activityld = [4242741a-0959-4b6c-886b-d7385dfc62f1], Operation=[Patching], Reason:[Windows update API threw an exception while assessing the machine for available updates. HResult: 0x80244022.. For information on diagnosing this error, see:].].

:mag: Cause

Details on the above exception:

Hexadecimal Error Code Decimal Error Code Symbolic Name Error Description Header
0x80244022  -2145107934  WU_E_PT_HTTP_STATUS_SERVICE_UNAVAIL  Same as HTTP status 503 - the service is temporarily overloaded.  wuerror.h 


The issue above in my customers circumstance was due to the following registry key being present:

Specifically this key was changed to 1 which needed to be 0 in order to utilize Microsoft Updates:

Entry name Data type Values
UseWUServer  Reg_DWORD   1 = The computer gets its updates from a WSUS server.
    0 = The computer gets its updates from Microsoft Update.
    The WUServer value is not respected unless this key is set.


More information on the registry keys for Automatic Updates and WSUS:

:wrench: Resolution

Modifying the registry key above (UseWUServer) registry key to 0 instead of 1 allowed us to successfully utilize Azure Update Manager.

:computer: PowerShell Script

# The following code will allow you to set the UseWUServer registry key to 0
# Which allows you to utilize Microsoft Updates instead of Software Update Services (WSUS)
Set-ItemProperty -Name UseWUServer -Value 0 -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU"

Example showing how the registry should look

Leave some feedback if this helped you! :v:

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About Blake Drumm
Blake Drumm

I like to collaborate and work on projects. My skills with Powershell allow me to quickly develop automated solutions to suit my customers, and my own needs.

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About Blake Drumm

My name is Blake Drumm, I am working on the Azure Monitoring Enterprise Team with Microsoft. Currently working to update public documentation for System Center products and write troubleshooting guides to assist with fixing issues that may arise while using the products. I like to blog on Operations Manager and Azure Automation products, keep checking back for new posts. My goal is to post atleast once a month if possible.

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