Hello everyone.

Has anyone have the same problem. I have my windows validated, I then to
proceed to download. Afterdownload I click WindowsDefender.msi to install,
but then it says: "This Installation package could not be opened. Contact
the application vendor to verify that this is a valid windows intaller
package."

Thats my problem. Hopefully I can get this resolved.

Thank you all for your help.

Jeff

Thanks--There may have been load issues involved in your experience--I know
I've seen some other reports of problems at some unspecified time in the
recent past--and they might well correspond to your problem.

There are some legit download sites--majorgeeks, filehippo, for example,
that also have links to Windows Defender downloads. I'm not sure how they
work, given the WGA restriction, but they are legit alternative sources.

--

"p645n" <(E-Mail Removed)> wrote in message
news:F983347B-15B2-4B9C-8F5E-(E-Mail Removed)...
> OK -- here's the solution to my problem [and maybe Jeff's].
> When I looked in my trash can I noticed that all the WindowsDefender files
> I
> downloaded were different sizes -- around 4.4 megs. I'd thought the
> difference was explained by updates that MS had made.
> Then I noticed that Defender was suppose to be more then 6 megs -- I
> started
> to wonder if I was downloading a complete install from MS. So I tried MS
> two
> more times and got files that were two different sizes 9again both around
> 4.4
> megs]. Then I attempted to download to "Run" instead of "save to disk".
> The
> download would get to about 80 percent complete and then the install [or
> run]
> would begin. Clearly there was something wrong on MS's end -- I know thats
> the case because I then went to two different torrent site and downloaded
> a
> good 6.557 meg install from both sites. Neither site interrupted my
> download,
> both downloads install.
> Moral to the story? Maybe a MD5 check is a good idea.
>
> "p645n" wrote:
>
>> I should also add that I have gotten this message when attempting to
>> install
>> from the "Run" option:
>> "This installation package could not be opened. Contact the application
>> vendor to verify that this is a valid Windows Installer package."
>>
>> "p645n" wrote:
>>
>> > I'm having the same problem on my machine running XP Pro, SP2 & all
>> > updates
>> > [including Windows Installer 3.1]. I've downloaded and attempted to
>> > install 4
>> > times in the past couple weeks -- an hour ago being my most recent
>> > attempt.
>> > I've attempted both a "save to file" or "run" install but get the same
>> > message result Jeff has:
>> > "This installation package can not be opened. Contact the application
>> > vendor
>> > to verify that this is a valid Windows Installer package."
>> > Ideas anyone?
>> > Suggestions as to where else I can go for a solution to this problem?
>> > Thanks all.
>> > jim
>> >
>> > "Jeff" wrote:
>> >
>> > > Hello everyone.
>> > >
>> > > Has anyone have the same problem. I have my windows validated, I then
>> > > to
>> > > proceed to download. Afterdownload I click WindowsDefender.msi to
>> > > install,
>> > > but then it says: "This Installation package could not be opened.
>> > > Contact
>> > > the application vendor to verify that this is a valid windows
>> > > intaller
>> > > package."
>> > >
>> > > Thats my problem. Hopefully I can get this resolved.
>> > >
>> > > Thank you all for your help.
>> > >
>> > > Jeff