Downloading and Installing Windows Defender

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Guest

After I download and try to install Windows Defender, I get a message that
says: THIS INSTALLATION PACKAGE COULD NOT BE OPENED. CONTACT THE APPLICATION
VENDOR TO VERIFY THAT THIS IS A VALID WINDOWS INSTALLER PACKAGE.
 
Hi Bill,

I posted this in 2 locations, thanks for responding to both. I've responded
over in the anti-spyware general discussion.

Thanks for the follow-up.

Dan
 
I've experinced the same message when I tried to install the program.
Additionally, I've received a security warning saying "Publisher could not
be verified. Windows Installer Pkg. File does not have a valid digital
signature. I'm running XP SP2, and downloaded the Windows Defender.MSI

So . . . . I never really did understand if you got an answer to the
question or not - 'cause I need to know the answer also.
Thanks
Jan
 
I can't find the other thread to see whether it was resolved or not.

I would recommend downloading anew, without using any download manager, if
possible. Save the download to a known location such as the desktop.

Then, disable real-time protection from your antivirus--just for the
duration of the install--enable it afterwards.

Run the downloaded file to do the install.



--
 
Thanks for replying, Bill.

I dread downloading the program again since I’m on dial-up and it takes
so-o-o long. First, I’ll disable my anti-virus (I use AVG) and my firewall
and try the install one more time. If unsuccessful, I’ll re-download.

You suggested downloading the program “without using any download manager, if
possibleâ€. Since I’m only moderately advanced on computers, I haven’t a
clue how to attempt that. Can you offer any further advise?

Thanks so much for your help.
Barts
 
If you aren't aware of using a download manager, don't worry about it. I'm
involved in another thread where an unusual message accompanies a download
failure, and I suspect some other "agent" is involved in the download
process. In your case, I don't see evidence of that.

There should be no need to disable a firewall--I wouldn't recommend
that--but disabling the Antivirus during the installation process may help.
I have installed on several machines protected by AVG Free version without
any problems, though.

I suspect, in the end, that another download will be necessary. If you do
one, save the file to a known location--such as the desktop--don't just run
directly from the download dialogs.

--
 
Thank you again, Bill,
Hopefully this is the last time I'll have to post to this. i disabled my
anti-virus and downloaded again. It hung up at 6.02 MB and just churned away
with no additional progress. That only took about an hour (of wasted time).
Finally I started shutting down things in the Task Manager - unfortunately I
don't know what a lot of the processes are, so I crossed my fingers and kept
closing out programs. I downloaded one more time - this time I got it and
it only took about 30 minutes.

After installing, it asked to check for updates. But when I tried for the
updates, they wouldn't download.

Anyway, long story short, it eventually popped up and asked to perform a
scan, which I allowed - so I'm assuming it's now running and fully
functional. I don't, however, know if my shutting down various programs
allowed the download to finally happen - or if it was just "third time is
charm".

But thanks again for you help.
Barts
 
--

Barts said:
Thank you again, Bill,
Hopefully this is the last time I'll have to post to this. i disabled my
anti-virus and downloaded again. It hung up at 6.02 MB and just churned
away
with no additional progress. That only took about an hour (of wasted
time).
Finally I started shutting down things in the Task Manager - unfortunately
I
don't know what a lot of the processes are, so I crossed my fingers and
kept
closing out programs. I downloaded one more time - this time I got it
and
it only took about 30 minutes.

After installing, it asked to check for updates. But when I tried for the
updates, they wouldn't download.

Anyway, long story short, it eventually popped up and asked to perform a
scan, which I allowed - so I'm assuming it's now running and fully
functional. I don't, however, know if my shutting down various programs
allowed the download to finally happen - or if it was just "third time is
charm".

But thanks again for you help.
Barts
Click to expand...
 
I think you may be in good shape now.

I suspect that halting the background stuff may well have helped.

The update thing sounds approximately normal. There's a checkbox at the
very end of an install to "update definitions and perform a quickscan." If
you check this, the home page will come up with a lengthy pause while it
gets definitions--this is perhaps 30 seconds or more on a broadband
connection. Pressing the button to get definitions doesn't speed things up
any.

When the definitions do come in (this is via AutoUpdate)--the scan then
proceeds automatically--it sounds like this is what you saw.

If the quickscan doesn't see anything, and a scan with your antivirus finds
you clean, I expect that you probably are, unless you see specific symptoms
otherwise. However, it'd be nice to know more about what prevented the
download.

--
 
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