--- title: How to Connect the vFairs On-site Mobile App to the vFairs On-site Windows Application description: Learn how to connect the vFairs On-site mobile app with the vFairs On-site Windows application for badge printing using printers like Zebra ZC10L, Epson CW-C4000/CW-C3500, and Evolis Primacy. Step-by-step setup, hardware requirements, and troubleshooting included. --- [Skip to content](https://help.vfairs.com/knowledge/how-to-connect-the-vfairs-on-site-mobile-app-to-the-vfairs-on-site-windows-application#main-content) English Show submenu for translations [Customer portal](https://support.vfairs.com/care?hsLang=en) Open main navigation Close main navigation - English Show submenu for translations - [Customer portal](https://support.vfairs.com/care) Welcome to vFairs Help Center - There are no suggestions because the search field is empty. 1. [Help Center](https://help.vfairs.com/knowledge?hsLang=en) 2. [Badge Printing & Check-in App](https://help.vfairs.com/knowledge/badge-printing-check-in-app?hsLang=en) # How to Connect the vFairs On-site Mobile App to the vFairs On-site Windows Application ## To enable onsite badge printing, you must connect the vFairs On-site mobile app to the vFairs On-site Windows application, which acts as the bridge between the mobile app and the printer. This guide will take you through the full setup and connection process. #### **Before You Begin** Make sure you have the following: - Supported on-site printer. - Download & Install the vFairs On-site Windows Application - 🔗 [Windows App](https://drive.google.com/file/d/1Ewfyh4hrezOP26fZYqXTDzK8iE-YANo4/view) - Printer hardware fully set up with badges/ribbons installed - Windows laptop/PC - USB cable to connect the printer to the laptop (included with the printer) - Router or network, if needed - vFairs On-site mobile app login credentials - Stable internet connection **Important:** Both the Mobile App and Windows App must be logged in using the **same credentials** to establish a connection. --- #### **Hardware Setup** If you have not yet set up your printer hardware, please follow the instructions in the dedicated setup guides below before continuing. ### **Hardware Setup Guides** 🔗 **Zebra ZC10L Printer Hardware Setup** [*Zebra ZC10L Setup*](https://help.vfairs.com/knowledge/connecting-the-badge-printing-app-with-zebra-zc10l?hsLang=en) 🔗 **Epson CW-C4000 / CW-C3500 Printer Hardware Setup** [*Epson CW-4000 / CW-3500 Setup*](https://help.vfairs.com/knowledge/connecting-the-badge-printing-app-with-epson-4000?hsLang=en) 🔗 **Evolis Primacy Printer Hardware Setup** [*Evolis Primacy Setup*](https://help.vfairs.com/knowledge/connecting-the-badge-printing-app-with-evolis-primacy?hsLang=en) If you are unsure how to load badges, install ribbons, or configure your network, use the relevant guide above before proceeding. --- #### **Step-by-Step Setup Instructions** ### **Step 1: Log In to the vFairs On-site Mobile App** Log in to the app using your event credentials. You will likely have already completed this step before accessing this article. ![Screenshot 2025-11-20 at 2.28.52 PM](https://help.vfairs.com/hs-fs/hubfs/Screenshot%202025-11-20%20at%202.28.52%20PM.png?width=670&height=464&name=Screenshot%202025-11-20%20at%202.28.52%20PM.png) --- ### **Step 2: Connect Your Printer Hardware** Ensure your printer is powered on, loaded with the correct badge stock and ribbon, and connected to the network if required. --- ### **Step 3: Connect the Printer to Your Windows Laptop** Use the **USB cable** included with the printer to connect it directly to your Windows laptop. **Note:** The printer must be connected via USB before signing in to the Windows app. If it is not connected, it will not appear in the printer dropdown. --- ### **Step 4: Download & Install the vFairs On-site Windows Application** Download the latest version here: 🔗 [Windows App](https://drive.google.com/file/d/1Ewfyh4hrezOP26fZYqXTDzK8iE-YANo4/view) Open the installer and follow the installation steps. --- ### **Step 5: Launch the Windows Application & Form the Connection** 1. Open the vFairs On-site Windows application 2. Log in using the **same credentials** you used to log into the vFairs On-site mobile app 1. ![undefined-Nov-20-2025-09-17-59-8159-PM](https://help.vfairs.com/hs-fs/hubfs/undefined-Nov-20-2025-09-17-59-8159-PM.png?width=670&height=479&name=undefined-Nov-20-2025-09-17-59-8159-PM.png) 3. Select your printer from the **Printer Selection** dropdown![](https://help.vfairs.com/hs-fs/hubfs/undefined-Nov-20-2025-09-18-00-2856-PM.png?width=670&height=477&name=undefined-Nov-20-2025-09-18-00-2856-PM.png) **This is the step that forms the connection between the Windows App and the Mobile App.** Both must be logged in with the same credentials. --- #### **Connection Complete** After login, the mobile app and Windows app will automatically sync. You can now: - Scan attendees - Print badges directly from the mobile app through the Windows-connected printer #### Troubleshooting | **Issue** | **Possible Cause** | **Solution** | | --- | --- | --- | | Printer not showing in dropdown | Printer not connected via USB or driver not installed | Reconnect the USB cable, restart the printer and laptop, and ensure the correct drivers are installed | | Mobile app does not connect to Windows app | Different login credentials used on each app | Log out from both apps and log back in using the exact same credentials | | Badges not printing | Incorrect printer selected or wrong media configuration | Re-select the correct printer and verify badge size / media settings | | Printer detected but not printing correctly | Printer is offline or USB port not responding | Power cycle the printer, try a different USB port, and restart the laptop | | Badge printing alignment or blank print | Wrong template or media alignment | Check template settings, verify badge dimensions, and realign loaded badge stock | - 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