Issue

If you run K2 in a non-Active Directory environment, you may encounter an issue when upgrading or reconfiguring Nintex Automation K2 (5.8.1) or Nintex Automation K2 (5.9). The K2 JavaScript Service Provider (JSSP) service and its local user can end up with mismatching passwords, which can prevent the service from starting or stop the installer from completing successfully.

Resolution

 A new installer for Nintex Automation K2 (5.9) is available as at 2026/01/29

Clean installation using an installer previous to 2026/01/29

Clean installations of Nintex Automation K2 (5.9) using the installer previous to 2026/01/29 are not affected, but you may experience issues when trying to reconfigure the installation. See below for manual resolution for environments using the previous installer.

Note

Clean installations of Nintex Automation K2 (5.8.1) are not affected, but you may experience issues when trying to reconfigure the installation. We recommend upgrading to Nintex Automation K2 (5.9) using the latest installer.

Upgrading to Nintex Automation K2 (5.9)

Use the latest installer from 2026/01/29.

Reconfiguring environments  

Before reconfiguring an installation of Nintex Automation K2 (5.8.1) or an installation of Nintex Automation K2 (5.9) that used the previous installer, you must execute the following in command line:

1. Press Win + R, type cmd, and press Enter.
2. Execute the following in command line 

SourceCode.SetupManager.exe /var:[JSSP_USER_CHANGED]=false

Resolution for environments experiencing the issue

If you have already upgraded to or reconfigured Nintex Automation K2 (5.9), you will need to reset the JSSP User password manually and fix the service credentials before reattempting the installer again. Resetting the user password can be done in the Local Users and Groups Management Console and Services Management Console in Windows, or via the command line.!--endfragment>!--startfragment>

Solution 1 - Local Users and Groups Management Console and Services Management Console

Step 1

1. Press Win + R to open the Run dialog.
2. Type cmd and press Enter
3. Type lusrmgr.msc 
4. Expand users
5. Right click on K2LowTrust01
6. Click set password

Step 2

1. Press Win + R to open the Run dialog.
2. Type cmd and press Enter
3. Type service.msc 
4. Find K2 JavaScript Service Provider
5. Right click properties
6. Click the logon tab
7. Set the new password

Solution 2 - Command Line

1. Press Win + R, type cmd, and press Enter
2. Execute the following in command line 

sc stop "K2 JavaScript Service Provider"
net user K2LowTrust01 NEWPASSWORD
sc.exe config "K2 JavaScript Service Provider" obj= ".\K2LowTrust01" password= "NEWPASSWORD"
sc start "K2 JavaScript Service Provider"