https://community.qlik.com/t5/Reporting-Service-Alerting/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/m-p/2130805#M1803 <P>When accessing the HUB you are getting the following error when trying to open an application in the Qlik Sense Hub<BR /><FONT face="courier new,courier"><SPAN>Unable to connect to the Qlik Sense engine. Possible causes: too many connections, the service is offline, or networking issues.</SPAN></FONT></P> <P>&nbsp;</P> <P><FONT face="courier new,courier"><SPAN>So, with reference to the following post,&nbsp;</SPAN></FONT><FONT face="courier new,courier"><SPAN>I investigated<BR /></SPAN></FONT><FONT face="courier new,courier"><SPAN>・Maximum number of connections<BR />・Allow WebSocket traffic between client and Qlik Sense Server<BR />between the client and the Qlik Sense Server.<BR /><BR />As a result of the investigation, the maximum number of connections was not a problem, but the WebSocket traffic permissions were as shown in the attachment.<BR />Based on the results of the investigation, what should be the next steps?</SPAN></FONT></P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shimazaki_0-1698032859173.png" style="width: 400px;"><img src="https://community.qlik.com/t5/image/serverpage/image-id/118676i297D6CD4DA7AF947/image-size/medium?v=v2&amp;px=400" role="button" title="shimazaki_0-1698032859173.png" alt="shimazaki_0-1698032859173.png" /></span></P> <P><FONT face="courier new,courier"><A href="https://community.qlik.com/t5/Official-Support-Articles/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/ta-p/1717211" target="_blank">Unable to connect to the Qlik Sense engine error d... - Qlik Community - 1717211</A></FONT></P> Wed, 29 Jan 2025 15:57:23 GMT shimazaki 2025-01-29T15:57:23Z https://community.qlik.com/t5/Reporting-Service-Alerting/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/m-p/2130805#M1803 <P>When accessing the HUB you are getting the following error when trying to open an application in the Qlik Sense Hub<BR /><FONT face="courier new,courier"><SPAN>Unable to connect to the Qlik Sense engine. Possible causes: too many connections, the service is offline, or networking issues.</SPAN></FONT></P> <P>&nbsp;</P> <P><FONT face="courier new,courier"><SPAN>So, with reference to the following post,&nbsp;</SPAN></FONT><FONT face="courier new,courier"><SPAN>I investigated<BR /></SPAN></FONT><FONT face="courier new,courier"><SPAN>・Maximum number of connections<BR />・Allow WebSocket traffic between client and Qlik Sense Server<BR />between the client and the Qlik Sense Server.<BR /><BR />As a result of the investigation, the maximum number of connections was not a problem, but the WebSocket traffic permissions were as shown in the attachment.<BR />Based on the results of the investigation, what should be the next steps?</SPAN></FONT></P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="shimazaki_0-1698032859173.png" style="width: 400px;"><img src="https://community.qlik.com/t5/image/serverpage/image-id/118676i297D6CD4DA7AF947/image-size/medium?v=v2&amp;px=400" role="button" title="shimazaki_0-1698032859173.png" alt="shimazaki_0-1698032859173.png" /></span></P> <P><FONT face="courier new,courier"><A href="https://community.qlik.com/t5/Official-Support-Articles/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/ta-p/1717211" target="_blank">Unable to connect to the Qlik Sense engine error d... - Qlik Community - 1717211</A></FONT></P> Wed, 29 Jan 2025 15:57:23 GMT https://community.qlik.com/t5/Reporting-Service-Alerting/Unable-to-connect-to-the-Qlik-Sense-engine-error-displayed-on/m-p/2130805#M1803 shimazaki 2025-01-29T15:57:23Z