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IE7 Problem Launching .JNLP Files

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Unread 18-01-2008, 06:00 AM   #1
J. Aloye
Guest
 
Posts: n/a
IE7 Problem Launching .JNLP Files

We normally access a web based application that contains links to launch
specific sun java based secure .jnlp files.

All our PC's are part of a Windows 2003 domain environment. Group policy is
active and controlling much of how the PC's operate.

Before we upgraded from IE6 to IE7, when a link to open one of these JNLP
files is clicked, such as the link below (this is a secure environment so the
link will not work from the outside. It is simply put here to better
illustrate the problem), a dynamically created .jnlp file would launch and
the sun java environment would load up and the java application the link
points to would run.

"Locate" Link ->
https://www.mbnetstar.com/portal/sit...ateTransaction

"Inventory" Link ->
https://www.mbnetstar.com/portal/sit...oryTransaction

However, after upgrading to IE7, when this link is clicked (for example, the
"Locate" link below) the .jnlp that is supposed to launch does not, and the
internet explorer page simply refreshes.

However, if I am on my laptop, which is not part of the domain, and I click
on this same link, I get an internet explorer information bar message showing
that the .jnlp file is trying to download.

At this point, I simply have to click the "download file" option to launch
this .jnlp file.

Once I do this, on the laptop which is outside of the domain, the .jnlp file
automatically opens up and begins to launch.

I then click "yes" to accept the security certificate.

And shortly after doing this, the application opens up for use.

Given the fact that this worked without incident inside my domain when using
internet explorer 6, and it works fine on a laptop that sits outside of the
domain with IE7, what could possibly be causing this problem to occur on
workstations that sit inside the windows 2003 domain?

I changed nothing in any of the domain based group policy files I set up and
this problem happens immediately after upgrading to IE7.

I am certain the solution to this problem has to do with making some kind of
group policy adjustment so this file/launch issue is handled exactly the way
it is handled on my laptop, or handled on the same workstations when IE6 was
there.

I am hoping that someone has some clue on this and could point me in the
right direction. Initially, I thought it might be a mime type issue and made
some changes in group policy, but that did not have any effect, so there has
to be something I either missed, or I am not looking at this from the right
standpoint.

I singlehandedly built our domain environment, and configured every group
policy setting that is in effect so I am confident that I can get to the
bottom of this with a slight "nudge" in the right direction,

One interesting thing is that one link has always worked even after
upgrading to IE7 and that is the link below

https://www.mbnetstar.com/portal/sit...048184335RCRD#

What is the difference between the link to this .jnlp file that still works
in the domain since upgrading to IE7

https://www.mbnetstar.com/portal/sit...048184335RCRD#

And the 15-20 links that do not (examples shown below)

"Locate" Link ->
https://www.mbnetstar.com/portal/sit...ateTransaction

"Inventory" Link ->
https://www.mbnetstar.com/portal/sit...oryTransaction

The provider of the web application basically has told us that they refuse
to assist us on this and they have adamantly said there are no problems with
how they coded the links.

This exact question with screen shots to better illustrate the issue can be
seen at the following web site.

http://www.masano.com/ie7issue/ie7issue.html

Any help would be greatly appreciated.


 
Unread 19-01-2008, 06:13 PM   #2
Robert Aldwinckle
Guest
 
Posts: n/a
Re: IE7 Problem Launching .JNLP Files

"J. Aloye" <JAloye@discussions.microsoft.com> wrote in message
news:7C2D5A1D-2277-42AD-8E8E-02F839149F74@microsoft.com
....
> What is the difference between the link to this .jnlp file that still works
> in the domain since upgrading to IE7
>
> https://www.mbnetstar.com/portal/sit...048184335RCRD#



All the others have escaped characters? ; )

What encryption method are you using?

FWIW I think that that was once an issue in IE6 for MD5 digests.
E.g. should the digest be computed before or after a filename is prepared
for use in a URL? Does the other side do the same thing? Etc.

I don't think you are likely to find the necessary expertise for diagnosing
this in the IE General newsgroup. Normally I would probably be cross-posting
to the appropriate Security NG for the poster's OS but I'm not clear that we
know that. E.g. Windows 2003 domain looks like the server a client having
a problem would be connecting to?

Otherwise, have you tried using Fiddler2 to look for clues?
Unfortunately doing that will give you an extraneous symptom regarding certificates...

Also, if you suspect a difference in behaviour due to group policy
you could save and compare two traces made by ProcMon to try to detect that.


Good luck

Robert Aldwinckle
---


PS: I'm leaving the full thread below in case you do want to
continue with a cross-post in another newsgroup. Another option
would be posting in the MSDN forum for IE web development
but AFAIK you can't create new threads there by cross-posting.


> We normally access a web based application that contains links to launch
> specific sun java based secure .jnlp files.
>
> All our PC's are part of a Windows 2003 domain environment. Group policy is
> active and controlling much of how the PC's operate.
>
> Before we upgraded from IE6 to IE7, when a link to open one of these JNLP
> files is clicked, such as the link below (this is a secure environment so the
> link will not work from the outside. It is simply put here to better
> illustrate the problem), a dynamically created .jnlp file would launch and
> the sun java environment would load up and the java application the link
> points to would run.
>
> "Locate" Link ->
> https://www.mbnetstar.com/portal/sit...ateTransaction
>
> "Inventory" Link ->
> https://www.mbnetstar.com/portal/sit...oryTransaction
>
> However, after upgrading to IE7, when this link is clicked (for example, the
> "Locate" link below) the .jnlp that is supposed to launch does not, and the
> internet explorer page simply refreshes.
>
> However, if I am on my laptop, which is not part of the domain, and I click
> on this same link, I get an internet explorer information bar message showing
> that the .jnlp file is trying to download.
>
> At this point, I simply have to click the "download file" option to launch
> this .jnlp file.
>
> Once I do this, on the laptop which is outside of the domain, the .jnlp file
> automatically opens up and begins to launch.
>
> I then click "yes" to accept the security certificate.
>
> And shortly after doing this, the application opens up for use.
>
> Given the fact that this worked without incident inside my domain when using
> internet explorer 6, and it works fine on a laptop that sits outside of the
> domain with IE7, what could possibly be causing this problem to occur on
> workstations that sit inside the windows 2003 domain?
>
> I changed nothing in any of the domain based group policy files I set up and
> this problem happens immediately after upgrading to IE7.
>
> I am certain the solution to this problem has to do with making some kind of
> group policy adjustment so this file/launch issue is handled exactly the way
> it is handled on my laptop, or handled on the same workstations when IE6 was
> there.
>
> I am hoping that someone has some clue on this and could point me in the
> right direction. Initially, I thought it might be a mime type issue and made
> some changes in group policy, but that did not have any effect, so there has
> to be something I either missed, or I am not looking at this from the right
> standpoint.
>
> I singlehandedly built our domain environment, and configured every group
> policy setting that is in effect so I am confident that I can get to the
> bottom of this with a slight "nudge" in the right direction,
>
> One interesting thing is that one link has always worked even after
> upgrading to IE7 and that is the link below
>
> https://www.mbnetstar.com/portal/sit...048184335RCRD#
>
> What is the difference between the link to this .jnlp file that still works
> in the domain since upgrading to IE7
>
> https://www.mbnetstar.com/portal/sit...048184335RCRD#
>
> And the 15-20 links that do not (examples shown below)
>
> "Locate" Link ->
> https://www.mbnetstar.com/portal/sit...ateTransaction
>
> "Inventory" Link ->
> https://www.mbnetstar.com/portal/sit...oryTransaction
>
> The provider of the web application basically has told us that they refuse
> to assist us on this and they have adamantly said there are no problems with
> how they coded the links.
>
> This exact question with screen shots to better illustrate the issue can be
> seen at the following web site.
>
> http://www.masano.com/ie7issue/ie7issue.html
>
> Any help would be greatly appreciated.
>
>



 
 

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