Use this article to learn how to troubleshoot security intelligence updates for Microsoft Defender Antivirus when the first source is from Microsoft Update (formerly known as Windows Update). Follow these steps to troubleshoot issues with getting your security intelligence updates:
Make sure that the URLs you reviewed during the previous step aren't SSL inspected. Otherwise, you might see the following error in the event log:
properties
Source: Windows DefenderEventID: 2001 MicrosoftDefender Antivirus has encountered an error trying to update security intelligence.Errorcode: 0x80072ee7Errordescription: The server name or address could not be resolved.
What is error code 0x80072ee7?
properties
C:\>err 0x80072ee7
# as an HRESULT: Severity: FAILURE (1), Facility: 0x7, Code 0x2ee7
# for hex 0x2ee7 / decimal 12007 :ERROR_INTERNET_NAME_NOT_RESOLVEDinetmsg.hERROR_INTERNET_NAME_NOT_RESOLVEDwininet.h
Make sure that the services needed for Windows Update are started. These services include:
Windows Update service
Background Intelligence Transfer Service (BITS)
If you're using a Fallback order policy, make sure that Microsoft Update (MicrosoftUpdateServer) is the first item in the list.
If you have Microsoft Defender for Endpoint Plan 1 or only Microsoft Defender Antivirus, you can gather the diagnostic data using the client analyzer on Windows. See Run the client analyzer on Windows.
When you have your diagnostic data, convert the WindowsUpdate.etl logs into a human readable format by using the PowerShell command, Get-WindowsUpdateLog. Use that information to troubleshoot issues with security intelligence updates.