Setup Guide 22 September 2026 7 min read By Divyanshu Jain

Multi-User TallyPrime Office: Share One WhatsApp Number Across LAN

Managing multiple billing counters? Learn how our Gold tier implements a tally multi user whatsapp setup, allowing your entire office to share one official WhatsApp number seamlessly over a local area network.

The Problem: Multiple Counters, One Number

In a bustling retail environment or a mid-sized accounting firm, multiple employees are often creating invoices or ledgers on their own PCs using TallyPrime. Traditionally, configuring a tally multi user whatsapp solution meant complex routing, relying on third-party cloud tools, or worst of all, making everyone scan the same QR code, which WhatsApp Web limits to just a few connected devices. Having multiple isolated setups means fragmented communication with your clients. You need a centralized system where every bill generated from any terminal is sent out from one central, recognizable business number.

The Solution: Hub/Spoke Architecture

With the TallyWhatsApp Gold plan, we introduce the Hub/Spoke architecture. You designate one primary computer as the "Hub." This is the only machine that needs to scan the WhatsApp QR code. All other PCs on your LAN act as "Spokes." When a user on a Spoke PC clicks "Send WhatsApp" in TallyPrime, the TDL routes the request over your local network to the Hub PC, which then queues and sends the message. This centralizes control and maintains a single unified chat history with your customers. You can read more about multi-user configuration in our Complete Setup Guide.

How UDP Auto-Discovery Works

Setting up networked applications is usually a headache involving static IP configurations. TallyWhatsApp eliminates this. The Hub PC broadcasts a 30-second beacon over UDP port 8378. Spoke PCs listen for this beacon to dynamically discover the Hub on the local network. Ensure your Windows firewall allows traffic on port 8378. If you encounter issues, consult our Troubleshooting Guide.

Zero-Config Setup & 6-Character Pairing Code

We designed the Spoke configuration to be practically zero-touch. Once installed on a Spoke PC, the software listens for the Hub's broadcast. To ensure security and that you are connecting to your intended Hub (in case multiple hubs exist on a large network), the Hub generates a 6-character pairing code. You simply enter this code on the Spoke PC to authorize the link. For full initial setup instructions, refer to our Complete Setup Guide.

Auto-Reconnect on DHCP Changes

In typical office environments, routers assign dynamic IP addresses (DHCP). If the Hub PC restarts and gets a new IP address, old hardcoded systems would break. Because TallyWhatsApp uses UDP broadcasting, the Spoke PCs simply update their internal routing to the Hub's new IP address instantly and automatically. Your billing counter experiences zero downtime.

Use Case: 5-Person Accounting Office

Imagine an accounting firm where 5 accountants process payroll, send out ledgers, and handle payment reminders. With the Gold plan, the firm owner links the official business WhatsApp number on their PC (the Hub). The 5 accountants (Spokes) generate documents in TallyPrime and hit send. All messages funnel through the owner's PC. The owner can monitor the consolidated activity log, ensuring all communications are professional and centralized, while the accountants save hours of manual sending. This is the power of a proper tally multi user whatsapp setup.

Frequently Asked Questions