Lost Connection to Server. Reconnecting

[sjhussain]

Hello,

We are facing lot of issues with QV Connectivity and are constantly getting “Lost Connection to Server.  Reconnecting”

This is posing a big problem for us with our customer.  Everything seemed to be working fine but just three a few days back this started.  The irony is that it happened during the demo and we were unable to control it.

This error happens randomly – sometimes it is working fine other times it just keeps on giving the “Lost connection” errors.  We noticed that when the error starts - it particularly happens when we make the selections and press the search button.  I have checked the internet connectivity and it seems fine.  This happened a few times on the Server side also.

Will appreciate if someone can assist us with this as this is a real show stopper with the customer

Thanks.

[shane_spencer]

There was nothing in our logs.

[shane_spencer]

6 Months after reporting the issue Qlik finally came back with a fix:

Running Microsoft IIS

Handling Timeouts

Note! This is only needed when using very large QlikView documents that return timeouts.

Proceed as follows to handle timeouts:

Open the %ProgramFiles%\QlikView\Server\QlikViewClients\QlikViewAjax\web.config file in a text editor (for example, Notepad).

Search for the following text:<httpRuntime requestValidationMode="2.0" />

Edit the text so that it becomes:<httpRuntime requestValidationMode="2.0" executionTimeout="900"/>

Save the file.

Combining that time-out change with the QvsTimeout settings change above I've been able to prevent the "Lost Connection to Server.  Reconnecting" errors when running large ad-hoc analysis. Needless to say I didn't leave positive feedback about the (lack of) support I got from Qlik.

[gregortvw]

Hi,

this one worked for me (our ticket at QSupport was open for 3 weeks with no helpful ideas)

Regards

[hectorgarcia]

this worked for me too, thanks one less headache