Error on Reporting Server - but only through the ReportViewer control

We are using the webviewer control.

We get the following error when we try to export to EXCEL.

InternetExploer cannot download ...n=OnlyHtmlInline&Format=EXCEL from app.webcobra.com.

Internet Explorer was not able to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later.

This error comes up almost immediatly after it starts trying to download the file. It is a large dataset but it isn't "overly large". There are basically 44 records.

The other wierd thing is that it works fine on our BETA servers but not on our Production servers. We figure this is a setting somewhere that we have missed.

And now I found out that if it just leave it sitting there it eventually asks me if I want to open the file and it opened fine.

So what was the above error all about?

Does anyone have any ideas that I can look into?

Thanks!

Doesn't sound like a reporting service config problem. Maybe you should check your pro box or firewall's settings, including authentication, etc.|||

It doesn't happen with smaller amounts of records. If I have 4 or 5 records it doesn't give the message.

|||There is no firewall between the production box and the application servers.|||

Here is the fix...it problem was SSL

"Internet Explorer file downloads over SSL do not work with the cache control headers"

http://support.microsoft.com/kb/323308/en-us

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Well, that didn't fix it. It was promising but it didn't work.

First, the registry update is on a client computer. We don't have access to everyone's client computer. We need a fix for our servers.

And we updated one of our computers with the registry fix and we still got the message. Any other ideas?

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Hi:

We had the same issue. Does your fixed?