How to completely uninstall NPrinting 17 and higher releases
Article Number: 000019086 | Last Modified: 2019/07/08
Here are the instructions to uninstall Qlik NPrinting 17 or higher releases and the third party software it is using.
These steps removes all the known possible issues that may cause a failure in a re-installation of the program.Environments:
Qlik NPrinting 17.x and higher releases
Some registry keys or information related to previous installation can block a correct re-installation of Qlik NPrinting 17.
1. Go to Control Panel>Program and features and uninstall the following programs (if present). Please, follow the order: :
QlikView NPrinting Server, QlikView NPrinting Designer, QlikView NPrinting Engine, Rabbit MQ Server, Erlang OTP.
2. There are some steps that you need to perform manually to complete the uninstallation of Erlang and Rabbit. It is necessary to avoid errors in the installation:
-Open the C:\Windows folder. Delete the file .erlang.cookie. In NPrinting 19 and in the latest releases of NPrinting 18, the .erlang.cookie file is saved in "C:\Windows\System32\config\systemprofile".
-Open the user folder C:\User\UserName. Delete the file .erlang.cookie. "UserName" is the user that installed NPrinting Server.
-Open the Task manager>Show process from all users. End the following processes (if present): epmd.exe and erl.exe
-Open the command line as admin and run the following commands
taskkill /IM epmd.exe /F
taskkill /IM erl.exe /F
These are to close erlang processes that may be still active. Notice that sometimes they are not active: in this case you get an error saying that the process was not found
-Open the folder C:\Program Files and remove the erlXX.0 folder if present. XX is the version number. It depends on the installed NPrinting release.
You may not be able to delete this folder because the OS shows an error message saying that there is a file in use by another process. If so, you have to reboot the machine and then you will be able to remove the folder.
-Open the folder C:\Program Files (x86 ) and remove the Rabbit MQ Server folder if present.
The file .erlang.cookie is created in the Windows and in the installation user folder during the installation of Rabbit. The file is used to create a communication between Rabbit and Erlang.
3.In the registry key, open the HKEY_LOCAL MACHINE folder >SOFTWARE and remove the Ericsson folder.