Problem Updating Windows Defender

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  • Start date Start date
G

Guest

I cannot install definition update 1.14.1396.12 from both
update.microsoft.com and Windows Defender 'Check for Updates'.
1) Update.microsoft.com prompts "Updates were unable to be successfully
installed"
2) Windows Defender prompts "Windows Defender was unable to complete the
updates: 0x80070005. Access is denied."
I have already login as a member of Administrator and tried KB915105.
 
Hello phm2110,

Go to the System Event log:

Start, Run, eventvwr.msc <enter>

Click on the System event log

Go to View, choose Filter, and choose "windefend" in the source control.

Look for yellow triangle entries that give the precise path and location of
what was detected, and use the button provided to paste the content of the
detection back to a message here.
 
Here is a similar situation when trying to update to 1396.12 sig on ver
1.1.1051 Win Update indicates success. Also 1397 build will not update at all
so reverted back to 1051 build:
Event Type: Error
Event Source: WinDefend
Event Category: None
Event ID: 2004
Date: 4/17/2006
Time: 10:00:37 PM
User: N/A
Computer: SEB
Description:
Windows Defender has encountered an error trying to load signatures and
will attempt reverting back to a known-good set of signatures.
Signatures Attempted: Current
Error Code: 0x8050a001
Error description: The program cannot find definition files that help
detect unwanted software. To check for updated definition files, click Start,
click All Programs, and then click Windows Update.
Signatures loading: Backup
Loading signature version: 1.14.1395.2
Loading engine version: 1.1.1303.0


For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
 
Hello SBTRS,

Can you go to Windows Update, do an Express scan, and apply all offered
updªtes
http://update.microsoft.com
Once that is finished, can you verify the update installs? There are many
pre-requisite files which are needed from windows update and signature
update with windows defender will fail until you hªve these files.
--
You can run in safe mode with networking.
http://www.ewido.net/en
http://safety.live.com/site/en-US/default.htm
http://support.microsoft.com/kb/890830
--
Also, I think is better always you start your own thread, that way every
body get a better sugestions, and no way for mistakes.






I hope this post is helpful.
Let us know how it works ºut.
Еиçеl
 
There are no pending windows updates available except the new 1.14.1396.12
signature update, It installs ,says successful then when run Windows update
again shows up again. Is there a way to force a windows update of what ever
components you are referring to?
 
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