"You must connect to the Qlik sense server at least once.." error

[g_volpini]

Hi, 

I added the server successfully but I can't connect and still receive this message: 

You must connect to the Qlik sense server at least once before you can view its contents without an internet connection. Make sure that your internet connection is working and tap the Qlik Sense server again 

I tried to access Qlik sense via browser and I'm able to. I also updated the server link from the browser but nothing changed.

Moreover, the link works for Qlik Sense Desktop.

Any suggest?

Thanks

[PadmaPriya]

Hello @g_volpini ,

Are you finding issues with Qlik Sense mobile?

• This might be caused by a reverse proxy.
• May be you have a URL filtering system set up in the network.
  All URL's and sites that are not approved get blocked automatically.
• Please add the firewall ports for Qlik sense, add the host whitelisting, add antivirus exclusions for windows defender on windows server, restart all the services. 

Please see the following articles:

How are WebSockets used in Qlik Sense 

Troubleshooting Websockets in Qlik Sense

Thanks,
Padma Priya