Event ID - 25

Event Id25
SourceMicrosoft-Windows-WindowsUpdateClient
DescriptionAutomatic Updates Agent failed to check for updates with error %1.
Event InformationAccording to Microsoft :
Cause
This event is logged when Automatic Updates Agent failed to check for updates with error.
Resolution
Restart Windows Update Agent
If updates are available but do not automatically download, Windows Update Agent needs to be restarted.
To restart the Windows Update Agent:
At the elevated command prompt, type the following commands one after the other:
netstart
wuauserv
netstart wuauserv
Verify
To check for updates:
1.Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
2.Type wuauclt /detectnow, and then press ENTER.
3.At the command prompt, type eventvwr.msc and press ENTER to open Event Viewer.
4.To confirm that updates have been detected look for Event ID 40 in Event Viewer:
a.In the left panel of Event Viewer, click Application and Service Logs.
b.Expand Microsoft, and then expand Windows.
c.Click WindowsUpdateClient, and then click Operational.
d.Check to see if Event ID 40 is present in the event list.
Reference LinksEvent ID 25 from Microsoft-Windows-WindowsUpdateClient

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