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Contributor
Contributor

Qlik nprinting server June 19 installation issue

Hi Guys 

I have just installed qlik nprinting server June 19 and installation was completed successfully  without any error.

But when i was trying to open nprinting web console . It is displaying an error as below :

Error trying to open the page.

 Also , my qlik nprinting web engine service and qlik nprinting scheduler service is getting stopped automatically after few secs.

When i checked the logs i found below mentioned error:

Web Engine client certificate not found in store. Generating a new certificate from RabbitMQ CA key
Qlik.NPrinting.WebEngine 19.19.4.0 Qlik.NPrinting.WebEngine.WebEngineWindowsService 20190820T040417.746+05:30

ERROR  : Unable to start WebEngine service. ERROR: System.InvalidOperationException: Found 0 certificates for RabbitMQ Certification Authority. Expected value is 1↓↓ at Qlik.NPrinting.RabbitMQCertificatesGenerator.RabbitMqCertificatesGenerator.GetRabbitMqCaPrivateKey() in C:\Jws\release-19.19.x-NOvyT9XXE\server\NPrinting\src\RabbitMQCertificatesGenerator\RabbitMqCertificatesGenerator.cs:line 111↓↓ 

 

Thanks in advance.

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7 Replies
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Support
Support

Hi @Manish 

Did you perform database restore after upgrading?

  • If yes, a restore is not required and will cause your NPrinting deployment to fail (if you used an older NP database for the restore)  see: https://support.qlik.com/articles/000050323 regarding upgrading NPrinting information.

If you did upgrade from another NP 17 + server and no restore was done, please check the following article which mentions how to solve the issue.

If this was not an upgrade and a fresh installation, can you tell us if you ever had any other version of NPrinting installed on this computer at one time or another?

We are just 'like' you & like to be liked when we provide a helpful answer and or when you press the 'Solution Accepted' button if an answer provided resolves your question or issue... Cheers!
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Contributor
Contributor

hi@Frank_S 

This is not an upgrade. I have done a fresh installation.

But yes earlier i have nprinting version 17.x install in the same machine.

I uninstall earlier version i.e. 17.x and then tried to install the new version

Thanks

Manish 

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Support
Support

If this is fresh install, then do the following to clean up the previous install.

NOTE follow the steps in the correct order below or the uninstall process will not work normally.

  • Open task manager and do 'End task' on epmd.exe
  • Uninstall NPrinting Engine, Server and Designer as needed
  • Uninstall all versions of Erlang OTP  
  • If you had a very old version of NPrinting previously (17.2.x or lower), make sure to also un-install any Rabbit MQ remaining in Programs and Features/uninstall a program

Next, open the following and rename these folders:

  • C:\Program Files\NPrintingServer to C:\Program Files\NPrintingServer.old
  • C:\ProgramData\NPrinting to C:\ProgramData\NPrinting.old
  • Restart the server

NOTE: if you not able to rename the folders, restart the server and try to re-name again.

Once you are able to rename the folders, Install NPrinting server once again but make sure that you have met all system and user account requirements before proceeding.

For example

  • you must have a least 2 cores on your computer (see install requirements)
  • The NP service account must have log on as a service right before proceeding (see install requirements
  • etc

If this does not solve the issue, please start a support case so we can assist you further to clean up your machine in further detail before attempting another re-installation.

We are just 'like' you & like to be liked when we provide a helpful answer and or when you press the 'Solution Accepted' button if an answer provided resolves your question or issue... Cheers!
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Partner
Partner

Did you previously use a service account and then changed it to another service account? If so try using back to the old service account. 

Fei

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Employee
Employee

Hi,

I think you uninstalled only the old Version of Qlik NPrinting Server, Engine and Designer but you still have RabbitMQ installed. Please remove also it, reboot and install June 2019.

You are experiencing a bug solver in April 2019 by upgrading the Qlik NPrinting Messaging service but for some reasons it seems that in your computer the old version is still in use.

Best Regards,

Ruggero



Best Regards,
Ruggero
---------------------------------------------
When applicable please mark the appropriate replies as CORRECT. This will help community members and Qlik Employees know which discussions have already been addressed and have a possible known solution. Please mark threads with a LIKE if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem. You can mark multiple threads with LIKEs if you feel additional info is useful to others.
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Contributor
Contributor

Hi @Frank_S 

First of all thanks for providing such a detailed explanation.

I have followed all the steps shared by you but now my installation is not getting completed.

Please find below the image where it is struck.

Thanks in advance.

clipboard_image_0.png

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Employee
Employee

Hi,

Be sure that you fillwd all the requiremants listed in https://help.qlik.com/en-US/nprinting/June2019/Content/NPrinting/DeployingQVNprinting/Planning-your-...

Be sure to follow the correct installation procedure in https://help.qlik.com/en-US/nprinting/June2019/Content/NPrinting/DeployingQVNprinting/Qlik-NPrinting...

From only this screenshot it is not possible to understand what is happening. We need to check at least the logs you find in the folder C:\Users\NameOfTheUserWhoInstalledNprinting\AppData\Local\Temp and logs from https://help.qlik.com/en-US/nprinting/June2019/Content/NPrinting/AdministeringQVNprinting/Logging.ht...

Best Regards,

Ruggero



Best Regards,
Ruggero
---------------------------------------------
When applicable please mark the appropriate replies as CORRECT. This will help community members and Qlik Employees know which discussions have already been addressed and have a possible known solution. Please mark threads with a LIKE if the provided solution is helpful to the problem, but does not necessarily solve the indicated problem. You can mark multiple threads with LIKEs if you feel additional info is useful to others.