topic Re: About WebSockets connection error in Management & Governance

About WebSockets connection error

shimazaki — Wed, 01 Nov 2023 22:15:48 GMT

About WebSockets connection erro
When I try to open an application in the Qlik Sense Hub, I get the following error when accessing the HUB

"Unable to connect to the Qlik Sense engine. Possible causes: too many connections, service is offline, or network problem."

So, with reference to the following post,

Entry for Maximum Number of Connections

Allow WebSocket traffic

confirmed.

https://community.qlik.com/t5/Official-Support-Articles/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/ta-p/1717211

As a result, the entry to the maximum number of connections was OK, but..,

Qlik Sense Websocket connection tester showed the following

■Executed in Chrome on the server side

What is the result of each of the following responses that you have confirmed?
Also, what should we check for items that have failed?
・Authentication (Success)
・Connect secure websocket (Success)
・Product version collected through secure websocket (Failure)
・Application list through secure websocket (Failure)
・Connect websocket (success)

・Product version collected through websocket (Success)

・Connect websocket (Success)

・Product version collected through websocket (Success)

・Application list through websocket (Success)

Based on these results, could you please indicate what we should do next?

Re: About WebSockets connection error

ajaykakkar93 — Thu, 02 Nov 2023 03:22:58 GMT

Hi,

there are 4-5 sessions per user in qlik sense client managed, due to longer timeout settings this issue can happen, I suggest to verify your session duration by visiting in to QMC -> Central Proxy (Default) -> Central -> Session inactivity timeout (minutes)
I have kept 20Min so in this time ill have my session if active expired if I am not using them.

Re: About WebSockets connection error

shimazaki — Mon, 06 Nov 2023 00:19:02 GMT

@ajaykakkar93

Thank you for your response.

Changing the session time did not resolve the error.

Regarding the test I posted earlier, could you please tell me what each item is testing?
I would also appreciate it if you could tell me what settings in the system I should check, especially with regard to the items that are failing.

Thank you in advance.

Re: About WebSockets connection error

fatinfazrizanor — Mon, 21 Jul 2025 02:36:19 GMT

Hi @shimazaki ,

did you solve this issue? and may i know your solution?

Thanks