QlikView Client Disconnection Issue with QVP://(Server) | Server communication lost, closing document!

atsushi_saijo — Mon, 26 Jan 2026 18:19:17 GMT

I started investigation on the disconnection issue between QlikView server and QlikView client.

Very much often we currently experience such error, like every 10-15 mnutes. It is highly possible that this is related to the Client-Server communication.

On QVS, document timeout is 480 min.

Also in QVS, session timeout is set to none. But disconnection is recurring.

All the server services are running normally.

License leasing is properly executed. Users can open documents in OpenInServer, and explore for 10-15 minutes. Then disconnection comes.

To start investigation, we have prepared WireShark to monitor TCP communication on the test server. Now, what port should we watch for such error? What type of keep-alive mechanism could we implement?

To be safe side, we have disabled Add-on Congestion Control Provider on WIndows Server 2008 R2.

[Old Config]

[New Config]

I should highly appreciate for any feedback/advices.

Re: QlikView Client Disconnection Issue with QVP://(Server) | Server communication lost, closing document!

atsushi_saijo — Thu, 28 Sep 2017 07:01:07 GMT

This turned out (the certitude is not 100%) to be insufficient hardware resource. This symptom was observed in a specific client, where reloading and pubslishing takes place withn single server host. At certain moment, the system resource maxed out, and user experiences disconnection.

topic Re: QlikView Client Disconnection Issue with QVP://(Server) | Server communication lost, closing document! in QlikView

QlikView Client Disconnection Issue with QVP://(Server) | Server communication lost, closing document!

Re: QlikView Client Disconnection Issue with QVP://(Server) | Server communication lost, closing document!