The ZSscaler Client Connector (ZApp) shows the Network Error (ZApp -8 network error) with ZApp running on Windows 10 environment. The user Windows need to be upgrade to windows 10 version 1909 as we see issue occur to prior 1909 only.
To check which version that currently the PC is using: Open CMD >> Type “winver”>> Enter
The About Windows will appear.
How to update Windows Build 1909
Step 1. Click on the Start menu icon and then on the Settings icon.
Step 2. In the new Windows Settings window, click on Update & Security.
Step 3. Next, click on Check for updates under the Windows Update menu. Don't worry, clicking on check for updates doesn't automatically install a new update now. You will have to click on Download and install now to begin the process.
Step 4. After you click the Check for updates button, Windows Update will start looking for any new updates available for your machine. This process makes sure you only receive a new feature update when it's ready for your machine. If there is a known issue affecting your device, Microsoft doesn't offer a new feature update through Windows Update.
The error code 0x80246008 appeared because I shut down the machine while it was still downloading Windows 10 1909. If this happens, you can just click on the Check for updates and then Download and install now button to proceed. You should see the following status:
Step 5. Once Windows Update has downloaded the new update, you will be asked to restart your device. You can choose to restart right then or later. The restart process may take around 30 to 45 minutes, and once you are done, your device will be running the latest Windows 10, version 1909. No setup of any kind required.
What is next
Once you are done installing Windows 10 November 2019 Update, go through first 3 steps again to check for cumulative and security updates. This will install the latest patches, which include fixes for most of the small bugs and annoyances. Checking for updates will also install any available security updates.