--- title: "Lasernet Core Upgrade Guide" slug: "lasernet-core-upgrade-guide" description: "Upgrade instructions for minor and patch upgrades of Lasernet Core." tags: ["Lasernet Core", "Upgrade"] updated: 2026-07-10T09:58:47Z published: 2026-07-10T09:58:47Z canonical: "kb.lasernetgroup.com/lasernet-core-upgrade-guide" --- > ## Documentation Index > Fetch the complete documentation index at: https://kb.lasernetgroup.com/llms.txt > Use this file to discover all available pages before exploring further. # Lasernet Core Upgrade Guide **Applies to:** Lasernet Core 10, Lasernet Core 11 This guide describes how to upgrade Lasernet Core to a later release. The upgrade process depends on the type of upgrade you are performing. ## Types of Upgrade An upgrade can be a major, minor, or patch upgrade. The upgrade type is determined by how the new Lasernet Core version number differs from the currently installed version. Lasernet Core version numbers follow a .. system; for example, Lasernet Core 10.12.1. ### Major Upgrade If the major version number differs (for example, 10.10 to 11.1), you are performing a “major upgrade”. For instructions, [see the relevant major version migration process](/v1/docs/lasernet-core-upgrade-guide#perform-a-major-upgrade). ### Minor and Patch Upgrades If the minor version number differs (for example, 10.10 to 10.13), you are performing a “minor upgrade”. If only the patch version number differs (for example, 10.10.2 to 10.10.4), you are performing a “patch upgrade”. For instructions, [see the minor or patch upgrade steps](/v1/docs/lasernet-core-upgrade-guide#perform-a-minor-or-patch-upgrade). ## The Upgrade Process Follow the relevant process below. ### Perform a Major Upgrade To upgrade from Lasernet 9 to Lasernet Core 10, see [Upgrade from Lasernet 9 to 10](/v1/docs/upgrade-from-lasernet-9-to-10). To upgrade from Lasernet Core 10 to Lasernet Core 11, see the [Lasernet Core 11 Migration Guide](/v1/docs/lasernet-core-11-migration-guide). ### Perform a Minor or Patch Upgrade In summary, this process involves backing up the Lasernet Core configuration (as an `.lnconfigx` file), uninstalling the currently installed Lasernet Core applications, and then installing the new version of those applications. > [!NOTE] > Note > > You do not need to manually stop any Windows services or deactivate Lasernet Core licenses. > [!NOTE] > Note > > This is an in-place upgrade. The new version of Lasernet Core replaces the currently installed version and all other Lasernet Core files remain in place. You do not need to set up your Lasernet Core configuration and forms again or reconfigure Lasernet Config. Currently installed licenses will apply to the newly installed software. > [!NOTE] > Note > > To upgrade from Lasernet Core 11.0 to Lasernet Core 11.1 or later, refer to [Upgrade from Lasernet Core 11.0 to Lasernet Core 11.1 or Later](/v1/docs/upgrade-from-lasernet-core-11-0-to-lasernet-core-11-1). > > For all other minor or patch upgrades, follow the instructions below. To upgrade, follow these steps: 1. Review the [Lasernet Core Compatibility Matrices](/v1/docs/lasernet-core-compatibility-matrix) to identify whether Lasernet Core's support for versions of its prerequisite software has changed between the currently installed Lasernet Core version and the new version. If so, take any necessary action, such as upgrading prerequisite software. 2. Log on to the Lasernet Core server as a user that has local administrator privileges. 3. **Optional:** To create a backup of your Lasernet Core configuration, start Lasernet Developer, open the configuration, and then export it as an `.lnconfigx` file. To export the configuration, click **File** > **Export Configuration** in Lasernet Developer, enter a **File name**, then click **Save**. ![The File > Export Configuration menu item in Lasernet Developer.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/export configuration(1).png) 4. Check whether the Lasernet Config service runs as the Local System user: 1. Open the Windows **Services** window. 2. Double-click the **Lasernet Config 10** or **Lasernet Config 11** service. 3. On the **Log On** tab, check which of **Local System account** or **This account** is selected. ![The Log On tab of the Properties window for the Lasernet Config 11 service.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/Lasernet Config 11 Log On tab.png) 4. If **Local System account** is selected, skip to step 5. 5. If **This account** is selected, make a note of the user account’s name. You will also need to know the account’s password. > [!NOTE] > Note > > This step is essential because uninstalling Lasernet Server deletes the Lasernet Config service. The new Lasernet Server installer will install a replacement service, which runs as the Local System user by default. To configure it to run as another user, you must know the user’s account name and password. 5. Review the [Lasernet Core 10](/v1/docs/lasernet-core-10-release-notes) or [Lasernet Core 11](/v1/docs/lasernet-core-11-release-notes) release notes for every Lasernet Core version between the currently installed version and the new version, to look for a notification that `LnLogin.exe` has been updated in that release. If it has been updated in any of those versions, in the following steps of the upgrade process, you must uninstall and then install every Lasernet Core application (such as Lasernet Server, Lasernet Developer, Lasernet Printer Service, and so on). If `LnLogin.exe` has not been updated, you may uninstall and then install only Lasernet Server. ![Information box in a Lasernet Core release notes document that describes that the release contains a new version of LnLogin.exe.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/LnLogin update information.png) 6. Uninstall Lasernet Core applications from the Windows applications list. ![In the Windows applications list the Uninstall menu item for the Lasernet 11 application is selected.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/uninstall lasernet server.png) - **If** `LnLogin.exe` **has been updated:** Uninstall all Lasernet Core applications. - **If** `LnLogin.exe` **has not been updated:** Uninstall Lasernet Server only. In the application list, Lasernet Server is labeled **Lasernet 10** or **Lasernet 11**. 7. Download and then install the new Lasernet Core version. - **If** `LnLogin.exe` **has been updated:** Install all Lasernet Core applications that your solution requires. - **If** `LnLogin.exe` **has not been updated:** Install Lasernet Server only. 8. If the Lasernet Config server previously ran as a user account (and not the Local System account): 1. Open the Windows **Services** window. 2. Double-click the **Lasernet Config 10** or **Lasernet Config 11** service. 3. On the **Log On** tab, select **This account**. 4. Select a user account and enter its password. 5. Click **OK**. 6. Restart the service. 9. If the Lasernet Config service and other Lasernet services (such as Lasernet Core environment/server services) are not running, manually start them. 10. Start Lasernet Monitor and verify that Lasernet Core environments/services have successfully started and loaded the Lasernet Core configuration. ![The Lasernet Core environment's log in Lasernet Monitor with two relevant log entries indicated by red rectangles.](https://cdn.document360.io/c831ef63-c6b3-48ee-b443-3e33644e4e2e/Images/Documentation/verify successful start in Lasernet Monitor.png) > [!NOTE] > Note > > If `LnLogin.exe` has been updated, you must also uninstall and then install Lasernet Core client applications such as Lasernet Developer and Lasernet Printer Service on other computers, such as developer workstations and print servers.