topic Re: "No connection" error in Access Point in QlikView

"No connection" error in Access Point

Mon, 26 Jan 2026 18:19:17 GMT

Hello everyone,

For each document I try to open on Access point, I get the error "No connection".

After reading some posts on this forum, I also realised the used memory on the webserver was quite high. Unfortunately, I don't know which processes I can stop...

I also noticed than in QMC, I can see some documents are opened but there is no Active Users.. Maybe some users let their application opened in access point and so it consumes too much memory ? I don't know if this is related...

What can I do to lower the memory ? Do I have to remove applications from Access Point ?

I have also tried to restart the Qlikview services but with no success...

Thank you for your help.

Have a good day

Laura

Re: "No connection" error in Access Point

avinashelite — Thu, 05 Feb 2015 13:28:52 GMT

Hi Laura,

Your QV server is down I think that's why your getting this error this will happen if some of the application are running for a long time and have occupied lot of memory i.e RAM , please identify those app and try to improve their reload time. This should do

Its noting

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 13:37:26 GMT

Hi Avinash,

Ok, I will try it.

But is this normal that task reloads on QV Server affect memory on webserver ?

I would like to understand how it is related.

Thank you

Re: "No connection" error in Access Point

avinashelite — Thu, 05 Feb 2015 13:44:17 GMT

yes, its related .

see when a application start reloading it start fetching the data from DB and it start consuming the memory, if the data is more then the task will be running for more time and all the data will be get cached in the memory so memory has got occupied completely!!!! so if a user try to access any application from the same server then it won't has the memory to allocate for the particular instance so it gives this kind of error.

Check with your ADMIN team they will you more details.

Hope this helps you

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 13:54:35 GMT

Applications are reloaded on server A and webserver is on server B.

I noticed memory is high (but there is still some free memory) on server B. On server A, there is still lot of free memory.

If I temporarily want to be able to access the application on Access Point, (let's say I don't have time to optimize applications), should I delete some ? but delete where ? the applications are not stored on the QVserver itself but on another one which is linked...

Moreover, I see in the QMC, Status> QVS Statistics then Open Documents, 3 documents... (but Sessions=0) and there is no active users... Does that mean these are open documents users had forgotten to close and so consume memory ?

Thank you again

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 14:17:38 GMT

Hey,

I have also noticed an error in the event viewer of the webserver :

Failed to start Snmp listener. System.Net.Sockets.SocketException (0x80004005): Only one usage of each socket address (protocol/network address/port) is normally permitted at System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot

Re: "No connection" error in Access Point

avinashelite — Thu, 05 Feb 2015 14:27:43 GMT

The message is related that Qlikview Server is not responding you... There are several reasons for that.

1- It may be a communication problem because of your server name or domain name.

2-There is a working set limit in Qlikview Server Performance options. If you load a lot of data to your document, then sometimes qlikview could not manage this working set limit because of windows limitations(Sometimes virtual machines can cause that). In that case qlikview server may not response you even if your ram is not loaded fully.

In your case if you get the message randomly, then it may be related this working set parameter. If you decreased it before try to increase it to %85-%90. If you still geting no connection message,

-Decrease the load of your doucments

-Increase the Ram Amount of your Server.

Hope this helps you

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 14:35:14 GMT

Hi Laura

did you set up the licences ?

best regards

chris

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 14:38:31 GMT

Thank you Avinash.

I have restarted the webserver and the memory got low again but I still get the "no connection" message

In the server performance, it was at %70-%90., I have tried to put it at 85% - 95% but still get the message...

Since the ram doesn't seem to be the cause of the problem, I guess the solutions you propose won't be usefull?

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 14:39:34 GMT

Hi Chris,

What do you mean ?

I haven't change anything lately.

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 14:47:59 GMT

Laura,

No connection means you can ping the QV Server.

Do the services are running?

Chris

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 15:11:39 GMT

Chris,

Yes, I can ping the webserver from Qv server.

And yes, all the services are running and I restarted them all but no result

Laura

Re: "No connection" error in Access Point

avinashelite — Thu, 05 Feb 2015 15:26:54 GMT

Please go through this treads , hope this helps you

Error "No connection" while opening doc in Access Point

Then it could happen that if some users are accessing the application and ram consumption go high and a certain period QlikView becomes unresponsive and you get no connection or session lost message.

Or there is probability that one single user open many sessions and it cause in more ram consumption.

In this case educate your end user to close application by clicking close button located on top right of your access-point when you open your application.

or can use this extension to kill session automatically.

http://community.qlik.com/docs/DOC-2853

Re: "No connection" error in Access Point

quwok — Thu, 05 Feb 2015 15:39:35 GMT

Hi Laura,

do you have the QlikView Web Server and the IIS Server running? Try changing the port used.

As a quick check, try changing the port IIS uses to 8080 and see if it helps. If it does, we would also recommend you to remove the one that you are not using.

Re: "No connection" error in Access Point

Thu, 05 Feb 2015 15:43:38 GMT

Hi Kwok,

I don't know what "IIS" is. I am not sure I use that... I have Small Business Edition and no Publisher.

Qlikview webserver is running. Where could I change the port ? (Sorry, I am not an expert about ports and all this )

Re: "No connection" error in Access Point

quwok — Thu, 05 Feb 2015 16:19:12 GMT

To check if you have IIS installed, on your web server go to

Control Panel -> Add Remove Programs -> Click Add Remove Windows Components

Select "Application Server" and click on "Details" and see if the IIS box is checked.

Re: "No connection" error in Access Point

Mon, 09 Feb 2015 15:23:32 GMT

Hello everyone,

With the help of the support, I've decided to increase RAM. (We currently have 16Go).

but how can I estimate how much RAM do I need ? I know it depends on the number of applications, the amount of data loaded in each, the number of concurrent users but clearly is there a way to calculate it according the amount af RAM used by an application when I open it for example ?

Thank you

Have a good day

Re: "No connection" error in Access Point

Thu, 05 Mar 2015 13:32:11 GMT

Hi Laura

please find attached method to estimate RAM

best regards

Chris

Re: "No connection" error in Access Point

Thu, 05 Mar 2015 13:40:59 GMT

Thank you

Re: "No connection" error in Access Point

danm84306-2 — Tue, 29 Nov 2022 18:41:59 GMT

Go the the Publisher Server (server with the QV services) and Stop/Start the QlikView Webserver Service. If that doesn't fix it Stop/Start the QlikView Server Service