NPrintingQlik N-Printing Rendering Images from IE errors

[pasgalbarra]

Hi Community,

I have a client with NPrinting (May2022) in a server and then 2 servers (with 2 licenses differents) with Qlik Sense Feb2022.

1 server is working correct, all reports and emails are running as expected, but in the other server connections to app are working, however when we created publish tasks for them they will fail to generate any images, citing ERROR: CEF rendering exception. Error during GRPC request.

The client said he check this article:

https://community.qlik.com/t5/Knowledge/Nprinting-Log-ERROR-CEF-rendering-exception-GRPC-rendering/t...

and everithing is okay.

I checked this article:

https://community.qlik.com/t5/Knowledge/How-To-Check-Open-Ports-Using-PowerShell/ta-p/1714308

And the ports returns failure  (see attachment), but their Security team said that the ports are open and they can't find any block there

Any Ideas? Can someone explain to me how the data flows between both servers?

Thanks

[Frank_S]

Molto Bene @pasgalbarra!