topic Re: Lost Connection to Server - Reconnecting in QlikView

Lost Connection to Server - Reconnecting

Mon, 26 Jan 2026 16:26:21 GMT

We have a new Qlikview Configuration where the Webserver is in the DMZ using IIS, and all other Qlikview Services are run on it's own server. All the ports have been opened between Web Server & App Server that are necessary. When looking at the firewall traffic for any blocked ports while attempting to access the application, there are none. IIS is siteminder protected DMS mode using LDAP.

After about 60 seconds, (roughly, not exactly) the client reports the connection has been lost, reconnecting. When it reconnects, there is no communication between the web server & app server. So it seems it's referring to the connection between the Browser (AJAX) and the webserver. We can't seem to determine the cause of this message, and how to prevent it from appearing. The entire document is loaded on my local browser, and it's not dynamically updated, but still this error seems to occur.

Any thoughts? There are plenty of licenses, and everyone is using different logins. Timeout settings are all well above 60 seconds. I've browsed these forums for days, and couldn't find anything that worked related to these symptoms.

Re: Lost Connection to Server - Reconnecting

SunilChauhan — Mon, 24 Mar 2014 14:17:49 GMT

Try this

File C:\Documents and Settings\All Users\Application Data\QlikTech\QvWebServer\config.xml

contains a line <QVSTimeout>60</QVSTimeout>

hope this helps

Re: Lost Connection to Server - Reconnecting

Mon, 24 Mar 2014 14:20:35 GMT

Set that to 600, still same issue.

Re: Lost Connection to Server - Reconnecting

SunilChauhan — Mon, 24 Mar 2014 14:30:23 GMT

add your url to trusted site in Inernet Explorer prperties

Re: Lost Connection to Server - Reconnecting

Mon, 24 Mar 2014 14:37:22 GMT

Thanks. Have already tried this, and it's happening in all browsers and devices. It's protected by an SSL Certificate through VeriSign.

Re: Lost Connection to Server - Reconnecting

sudeepkm — Mon, 24 Mar 2014 14:38:28 GMT

Do you have any Authentication layer like SSO which has a session time out and impacting the QlikView user session?

Re: Lost Connection to Server - Reconnecting

srchilukoori — Mon, 24 Mar 2014 14:39:05 GMT

check the session timeout on the QEMC.

Re: Lost Connection to Server - Reconnecting

Mon, 24 Mar 2014 14:40:44 GMT

We're using siteminder, however, it's not timing out the session, we can refresh the page, and the session is still good.

Re: Lost Connection to Server - Reconnecting

Mon, 24 Mar 2014 14:42:04 GMT

Session timeout settings are way above normal. We increased this as the first troubleshooting step. Also increased the timeout in the document itself.

Re: Lost Connection to Server - Reconnecting

Mon, 24 Mar 2014 19:01:45 GMT

FYI, this issue was being caused because of Siteminder.

We configured the web agent to disable the cookie provider in the LocalConfig.conf

cookieprovider=""

Re: Lost Connection to Server - Reconnecting

Jeevan — Fri, 30 Aug 2019 12:12:15 GMT

Hello,

I have same problem can you explain how to find a way to the LocalConfig.conf?

Jeevan