CEF rendering errors in Qlik NPrinting: Troubleshooting step: use benchmarks to test the importing image process

Sonja_Bauernfeind — Mon, 17 Aug 2026 11:48:51 GMT

The benchmark application replicates the steps Qlik NPrinting follows to import images from Qlik Sense. It can be used to import many copies of the same image quickly and verify if there are any problems during the process.

This must be used any time a report generation fails with "CEF rendering" error messages in the Qlik NPrinting Engine log files.

The benchmark creates specific log files in the Qlik NPrinting log folder and saves the imported images in C:\tmp.

Environment

Qlik NPrinting

Resolution:

To configure the benchmark:

Download the zip file from here (GitHub) or use the direct download link (GitHub).
Extract it in C:\Benchmark\ on the machine where the Qlik NPrinting Engine is installed.
Open the Engine.Navigator.QlikSense.Benchmarks.exe.config file in C:\Benchmark\Engine.Navigator.QlikSense.Benchmarks with a text editor program.
It is necessary to reconfigure the connection to Qlik Sense. Follow these steps:

In 
<add key="bench-user-identity" value="domain\UserName" />
Add the user domain and name as it is in the NPrinting connection

In 
<add key="bench-proxy-url" value="https://qlikserverName" />
Add the Qlik Sense Server Proxy address as it is in the NPrinting connection.

In 
<add key="bench-app-name" value="PxP training Executive Dashboard" />
Add the Sense app name (not the app ID).

In 
<add key="bench-obj-ids" value="OjectID" />
Add the ID of the image that you are importing in the report. The image ID can be seen in the NPrinting template.

In 
<add key="bench-request-number" value="10" />
Specify how many times the image must be imported. For troubleshooting purposes, 10 can be considered as the minimum.
If the config file does not already contain the following entry, add it below the first <appSettings> section:<add key="validate-server-certificate" value="false" /> <add key="bench-request-number" value="10" />
Stop the Qlik NPrinting Engine and the Qlik NPrinting Scheduler services.
Double-click on Engine.Navigator.QlikSense.Benchmarks.exe to start the application.
Use an account that is both a local account and which meets all permission requirements as documented in Qlik NPrinting User accounts.

If the user running the benchmark is a non-local administrator, the application may fail with a System.IO.FileLoadException (0x80131515). If that is the case, unblock the Engine.Navigator.QlikSense.dll and try again.

Collect the Qlik NPrinting logs from the Qlik NPrinting logs folder and check whether the images are generated in C:\tmp. Verify that all the images are there and that their quality is as expected.

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

SonPhan — Fri, 25 Nov 2022 11:29:50 GMT

Hi Sonja,

the download file is not available, is there any other way to get access to the file?

Best regards Son

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Sonja_Bauernfeind — Wed, 11 Jan 2023 11:42:26 GMT

Hello @SonPhan

I'll speak to our Support team to see where the file went. Thanks for flagging this!

Update: we have the file available; if you need it currently please direct message me.

All the best,
Sonja

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

David_Friend — Tue, 10 Jan 2023 14:16:24 GMT

@SonPhan do you still need it

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

lcasbyapr — Fri, 17 Feb 2023 20:01:27 GMT

I need it. How can I get it?

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Sonja_Bauernfeind — Mon, 20 Feb 2023 09:55:38 GMT

Hello @lcasbyapr

I got in touch with you through direct messages.

All the best,
Sonja

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Sonja_Bauernfeind — Thu, 04 May 2023 06:58:15 GMT

The file download link is functioning as intended again.

article CEF rendering errors in Qlik NPrinting: Troubleshooting step: use benchmarks to test the importing image process in Official Support Articles

CEF rendering errors in Qlik NPrinting: Troubleshooting step: use benchmarks to test the importing image process

Environment

Resolution:

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process

Re: CEF rendering errors in NPrinting. Troubleshooting step: use benchmarks to test the importing image process