how to repair windows defender in vista 64

I want to do a repair of windows defender in Vista 64
Windows defender works ok,but the icon keeps disappearing from the icon
tray. I never know whether it's running or not.I can excite the program in
the start-programs & the icon will appear.When I re-boot icon disappears
again.I was told to put systray.exe in the start-up & this fixed it for one
re-boot.After that the shortcut does not work.
So.....how to repair windows defender in vista 64?(without re-installing
Vista 64).

To keep the Windows Defender icon in the notification area (tray bar),
check these settings in Windows Defender:
1. Open Window Defender
2. Click Tools
3. Click Options
4. Scroll down a bit, and look at the bottom of the section "Real-time
protection options" for "Choose when the Windows Defender icon appears
in the notification area:".
5. Check "Always"
6. Click Save

I wouldn't worry about the disappearing icon.

Here are 2 ways to check if defender is running:

1. right click on the shield in the icon tray and open security center.
Defender should be listed.

2. hit ctrl-alt-del and start task manager. look for "MSASCui.exe"
under processes

no need to repair i would think

I have that already checked,re-check & saved still does not work.Icon
appears in tray until I reboot,then it's gone again.

I already know how to check if it's running or not.........I want to know
how to repair windows defender in Vista 64

Do you have "Hide inactive icons" checked in the Start menu's
"Customize" area? Take a look at this tutorial. If you do, then either
uncheck it or make sure that "Show" is selected (step 7) for the Windows
Defender icon.

Well, it looks like we looked at all the easy common areas. If it is a
problem with a system file, then the "sfc /scannow" (no quotes) command
may fix the problem for you. This tutorial will show you how.

If not, then there is the more drastic Repair Install. This will allow
you to repair your Vista installation without loosing your files,
settings, and programs. You may need to reinstall your drivers again
afterwards though. This will show you how.

Other than a clean install, these are the only options I know left to
try. Hope the help.

Well, I'm stumped now too. It may be a bug that hopefully will be
addressed when the Vista SP1 will be released in the rumored Q1 of 2008.

I have the same thing happening with my 64 bit Vista Utlimate. Because
of this and other annoyances and lack 3rd party support for drivers,
etc. I'm seriously considering reinstalling with the 32 bit version.

[mtyler7807]

I found the fix!!!

1. End this process in task manager: MSASCui.exe
2. Stop this service from running: windefend

3. Download up date from.
x32 - http://go.microsoft.com/fwlink/?Link...14&clcid=0x409
x64 - http://go.microsoft.com/fwlink/?Link...55&clcid=0x409

4. Extract the file using winrar.
5. Copy the files and paste them into each folder located in:
C:\ProgramData\Microsoft\Windows Defender\Definition Updates\

6. Restart the windefend service

Now you are updated. Windows Defender will continue to update.

Thats how you manually update windows defender.

[dmay]

WOW. you are good.