Unable to find the Engine

[RichP1]

Ok, this looks like it's an issue with the latest Microsoft security update, which landed on Tuesday.

It looks as if some Active X controls have been disabled, this appears to have an effect on Lightstreamer, although I don't know what or why exactly.

We found a workaround by adding our webserver as a trusted site in IE6. Then we reset the custom settings for the trusted sites zone to 'Low' and enabled the option "Initialize and script ActiveX controls not marked as safe". The lightstreamer app is now working as it should.

I don't know quite how we're going to cope with this going forward, it may be that we recommend that the clients use Firefox or IE7, where this problem doesn't exist. For the meantime at least we have this somewhat awkward workaround

Cheers,

Richard

[Mone]

Hello,

I've tried to reproduce the issue but I wasn't able to do so.
In the case that IE6 even if is showing "internet" on the status bar is behaving like "local intranet", can you check these demos?
http://app.lightstreamer.com/StockListDemoQ <-WC 4.0.8
http://app.lightstreamer.com/StockListDemo <- WC 4.3 alpha2
http://app.lightstreamer.com/WC3_StockListDemo <- WC 3

Do you see the issue there?
The Active X behavior should not affect our library because we have some fallback so that the library should work correctly without them.

Do you have a publicly available PoC showing the issue that I can see?
We'd like to understand the issue even if it is related to old client versions.

Thank you.

[RichP1]

Only one of those demos works for us - the one using client 4.3 alpha 2.

The other two versions fail in the same way that our application fails. Am I right in thinking that 4.2.2 is the latest client release? I'll try upgrading the client to see if that makes a difference.

Unfortunately we don't have a demo available to demonstrate the problem. Is there anything else we could give you that might help, IE settings, source code etc?

Thanks,

Richard

[Mone]

Hello,
I've tried the demos from outside the local LAN.
I've used a PC with Windows 2000 5.00.2195 service pack 4 updated with the latest updates available with windows update.
The browser is IE:

Version: 6.0.2800.1106
Update Versions:; SP1; Q822925; Q330994; Q828750;
Q824145; Q823353; Q833989; Q903235;

With this environment the three demos are working correctly, can you see any difference with your environment?

Yes, version 4.2.2 is the latest available. A demo with that version is available here: http://app.lightstreamer.com/StockListDemoA/