Tekla Structures Multi User Server 23 20 May 2026

Tekla Structures 2023 brought significant updates to the ecosystem, and the Multi-User Server component includes several refinements to ensure stability and security.

Tekla Structures Multi-User Server 23.0 and 20.0 are legacy but functional on-premise collaboration tools. Version 23.0 is preferable for better performance and OS support. However, for new projects, upgrading to the latest Tekla Multi-User Server is strongly advised to ensure security, support, and feature completeness.

Note: dates and product names follow Tekla/Trimble conventions. This document summarizes installation, architecture, configuration, operations, troubleshooting and best practices for the Tekla Structures Multi-user Server version used with Tekla Structures 23.20 (Tekla Structures 2023 series). It is intended for IT administrators and technical leads responsible for deploying and operating multi-user Tekla environments.

| Feature | Tekla 20.0 | Tekla 23.0 | |--------|-----------|-----------| | Release Year | 2015 | 2016 | | Server OS Support | Windows Server 2008 R2 – 2012 R2 | Windows Server 2012 – 2016 | | Tekla Client Compatibility | TS 20.x only | TS 21.0 – 23.1 | | .NET Framework Required | 4.0 | 4.5.2+ | | Automatic User Disconnect | Manual only | Configurable timeout | | Performance for Large Models | Moderate | Improved (better lock handling) |

Note: Version 23.0 supports backward compatibility with some older clients via hotfixes, but mixing major versions (e.g., 20.0 client with 23.0 server) is not recommended and may cause database corruption.

The Tekla Multi-User Server is a lightweight server application designed to manage access to a single Tekla model shared by multiple users. Unlike the more advanced Tekla Model Sharing, which utilizes cloud-based caching for distributed teams, the Multi-User Server is designed for Local Area Network (LAN) environments.

Tekla Structures Multi-User Server enables real-time collaboration among multiple users working on the same structural model. Versions 23 and 20 represent stable, widely adopted releases, offering concurrent access, clash prevention, and change tracking without a cloud dependency.

The Tekla Structures Multi User Server 23 20 ecosystem represents a mature, reliable collaboration platform. While the industry pushes toward the cloud, the raw speed, deterministic control, and offline resilience of these legacy multi-user servers keep structural steel detailing floors running.

By following this guide—setting up dual-version ports, managing user lists, fixing error codes 1012 and 1005, and scheduling automatic purges—you ensure that your team of detailers, checkers, and project managers experiences zero downtime.

Remember the golden rule of Tekla Multi User: Communication saves conflicts. Use the server not just as a tool, but as a protocol. When version 23 eventually reaches end-of-life, you have a robust migration plan already tested for version 20 legacy models.

Need specific help with your Tekla Structures Multi User Server configuration? Check the official Trimble Community forums or consult your local reseller for version-specific hotfixes for 23.0 SR8 and 20.0 SR13.

The Tekla Structures Multi-user Server (version 2.3.20) is a service that allows multiple editors to work on the same model simultaneously [2]. Unlike the newer Tekla Model Sharing (which is cloud-based), the Multi-user Server operates on a Local Area Network (LAN) [2, 5]. Key Components

The Server Application: A lightweight service (e.g., teklastructures.exe) that runs on a central host machine [2].

The Multi-user Model: A model stored on a shared network drive accessible to all users [4].

Client Stations: Individual computers running Tekla Structures that connect to the server IP or hostname [2, 5]. Core Workflow

Server Startup: The administrator starts the Multi-user server service on a dedicated server or a stable workstation [2].

Model Conversion: A single-user model is converted to multi-user mode by going to File > Save As > Multi-user model [5].

Active Syncing: When a user clicks Save, Tekla synchronizes their local changes with the master model on the server [5]. If two people modify the same object, the first one to save takes priority [4]. Best Practices for Stability

Consistent Versions: All users must be on the exact same Tekla Structures version and Service Pack [1, 2].

Network Reliability: Use a wired connection. Wi-Fi is generally discouraged for multi-user environments due to the risk of packet loss during saves, which can lead to model corruption [4].

Unique IDs: Ensure every user has a unique login name to avoid identification conflicts within the model history [4].

Regular Backups: Because the server does not store "versions" like a cloud service, manual daily backups of the model folder are essential [4]. Troubleshooting Common Issues

Connection Errors: Usually caused by a firewall blocking TCP port 1238 (the default port for the Tekla server) [1]. Tekla Structures Multi User Server 23 20

Model "Locked": This occurs if a user’s session crashes. The administrator may need to use the Multi-user Server Manager to manually disconnect the "ghost" session [1, 2].

Sources:[1] Tekla User Assistance - Troubleshooting Multi-user[2] Tekla Structures Multi-user Server Setup Guide[3] Version 2.3.20 Release Notes[4] Tekla Multi-user Best Practices[5] Converting Models to Multi-user

Overview

Tekla Structures Multi-User Server 23.20 is a server-based solution that enables multiple users to collaborate on the same Tekla Structures project simultaneously. It allows teams to work together more efficiently, reducing errors and improving productivity.

Key Features

Benefits

System Requirements

Technical Specifications

Release Notes

The 23.20 release of Tekla Structures Multi-User Server includes several new features and improvements, including:

Conclusion

Tekla Structures Multi-User Server 23.20 is a powerful solution for teams working on complex construction projects. Its robust features and improved collaboration tools make it an ideal choice for companies looking to improve productivity and reduce errors. With its centralized project management and enhanced security features, it provides a secure and reliable platform for teams to work together effectively.

Tekla Structures Multi-user Server 2.3.2.0 is a companion service that enables real-time collaboration by allowing multiple users to work concurrently on a single central 3D model database. Google Groups Key Features & Benefits Real-Time Synchronization

: Changes made by one user are visible to others as soon as they save, ensuring everyone works on the most recent version of the model. Conflict Prevention

: The server coordinates write access, locking the master model during critical operations like opening, saving, and numbering to prevent data corruption. Backward Compatibility

: The 2.3.2.0 installation package is generally compatible with Tekla Structures versions 17.0 and later. Optimized Workflow

: It reduces the need for manual copying and merging of models, saving time and minimizing errors. Google Groups Essential Blog Post & Resources

For a comprehensive guide, the following resources cover setup and management: Getting Started with Multi-user : A detailed walkthrough from Trimble User Assistance

on installing the server and converting models to multi-user mode. Setting Up Several Servers on One Computer

: Instructions for managing multiple server instances by assigning unique TCP ports (e.g., 1240 instead of the default 1238). Multi-user Server Setup & Usage Guide : A community post from Google Groups

detailing installation steps, firewall configurations, and model conversion. Google Groups Quick Setup Reference

: Download and install the Multi-user Server package on a dedicated machine that remains powered on. Service Status Tekla Structures 2023 brought significant updates to the

: Verify that the "Tekla Structures Multiuser Server" is listed as "Running" in Windows Services.

A primary feature of the Tekla Structures Multi User Server 2.3.20 is its ability to facilitate real-time, simultaneous collaboration by managing centralized write access and model locking.

This service acts as a traffic controller for teams working on a shared local network (LAN). Key functionalities include:

Conflict Prevention: It automatically locks the master model when a user is saving, numbering, or editing specific objects, preventing others from making overlapping changes that could cause data loss.

Active Session Management: The server keeps a live track of all active users and their client computers, allowing team members to see who else is currently working on the project.

Automated Numbering Control: It manages the distribution of unique ID numbers for general arrangement drawings and multidrawings, ensuring consistency across all users.

Local Synchronization: Users work on a local "working model" and only synchronize their changes to the master model on the file server when saving, which helps manage network load. Multi-user system | Trimble User Assistance

Tekla Structures Multi-User Server 23.20 is a service that enables multiple users to work on the same Tekla Structures model simultaneously. It acts as a central hub where the model is stored, ensuring that all changes made by different team members are synchronized in real-time. Google Groups Key Features and Functions Real-Time Collaboration

: Team members can see updates and revisions as soon as they are made, preventing conflicts and ensuring everyone uses the most recent version. Workflow Optimization

: Centralizing the database saves time and reduces errors compared to managing individual model copies. Default Port : By default, the multi-user server communicates via TCP port 1238 Google Groups Installation and Versioning Version Compatibility

: While the specific "23.20" string often appears in older forum threads, Trimble typically provides version-specific installers. For newer versions (like 2020 and beyond), the installer can be found on the Trimble Downloads Administrative Access

: You must have administrator rights on the server computer to run the installation wizard. System Requirements

: The server software generally requires a Windows-based operating system; for example, the subscription tool specifically requires Windows 11 Microsoft .NET Framework 4.8 for modern versions. Tekla User Assistance Setting Up the Server : Obtain the multi-user server installation file from

: Run the installer on a dedicated server or a computer that remains powered on for team access. : Ensure that port

Comprehensive Guide to Tekla Structures Multi User Server 2.3.2.0

The Tekla Structures Multi User Server 2.3.2.0 (often referred to as version 23 20 in specific documentation) is a critical utility for engineering and detailing teams working on complex 3D structural models. It enables multiple users to access and modify a single master model simultaneously within a local area network (LAN). Key Benefits of Multi-User Mode

Working in multi-user mode allows teams to streamline their workflows by:

Real-Time Collaboration: Team members see updates and revisions as soon as they are saved to the master model, ensuring everyone is aligned.

Conflict Prevention: The server manages a queue for operations like saving and numbering, preventing data corruption and conflicts when multiple people work on the same area.

Centralized Data: All model data is stored on a central file server, reducing the risk of data loss compared to individual local copies. Installation and Setup of the Multi-User Server

Setting up the server involves installing the software on a machine that remains continuously accessible to all workstations. 1. Download and Installation

The installation package can be found on the Trimble Downloads page. While it is often associated with Tekla Structures 2020, the version 2.3/2.5 server is compatible with versions from 2017 onwards. Tekla Structures Multi-User Server 23

Default Path: C:\Program Files (x86)\Tekla Structures Multiuser Server.

Service Name: Once installed, it runs as a Windows service named Tekla Structures Multiuser Server. 2. Network Configuration

To ensure clients can connect to the server, you must configure your firewall:

Execution File: Add xs_server.exe to your firewall and antivirus exception lists.

Ports: The default port for the multi-user server is 1238. Some documentation for specific sub-versions (like 23 20) may reference port 1245; ensure you use the port specified during your specific installation. 3. Converting Models to Multi-User

To begin collaborative work, a single-user model must be converted: Multi-user system - Trimble User Assistance - Tekla

Mastering Collaboration: A Guide to Tekla Structures Multi-User Server 2.3.20

In the world of Building Information Modeling (BIM), seamless collaboration isn’t just a luxury—it’s a necessity. For structural engineers, detailers, and fabricators using Tekla Structures, the Multi-User Server 2.3.20 remains a foundational tool for teams working simultaneously on a single model.

While newer cloud-based solutions like Tekla Model Sharing have gained popularity, many firms continue to rely on the Multi-User Server for its stability within local area networks (LAN) and its straightforward setup. What is Tekla Structures Multi-User Server 2.3.20?

The Multi-User Server is a small service application that runs on a central computer (server) and manages access to a Tekla Structures model. Version 2.3.20 is a specific update designed to ensure compatibility across various Tekla versions while fixing critical bugs related to model locking and synchronization.

Essentially, it acts as a "traffic cop." When multiple detailers are working on the same high-rise or industrial project, the server ensures that two people don't try to modify the exact same part at the exact same time, preventing data corruption. Key Benefits of Version 2.3.20

Low Latency Performance: Because the server operates on your internal network, data transfer is incredibly fast compared to cloud syncing, making it ideal for large, complex models.

Model Integrity: Version 2.3.20 includes refined protocols for "saving" and "refreshing," ensuring that when a user saves their work, all other users receive the update without the model crashing.

No Subscription Fees: Unlike Tekla Model Sharing, which often requires a per-user license or "credits," the Multi-User Server is generally included with your Tekla Structures license, making it a cost-effective choice for localized teams. Installation and Setup Best Practices

To get the most out of Multi-User Server 2.3.20, your IT environment should be optimized. Here is the standard workflow for a successful deployment: 1. Server Requirements

The server application is lightweight. You don't need a high-end workstation to run it; a dedicated "always-on" PC or a standard Windows Server instance will suffice. Ensure the server has a static IP address to prevent connection drops. 2. Port Configuration

The Multi-User Server typically communicates through Port 1238. You must ensure that this port is open in your server’s firewall and that the client workstations can "ping" the server over this port. 3. Version Consistency

While the server version 2.3.20 is backward compatible with many versions of Tekla Structures (e.g., 2017 through 2021), it is vital that all detailers working on a specific model use the same version and Service Pack of Tekla Structures to avoid database conflicts. Common Troubleshooting Tips

Even with a stable version like 2.3.20, users may encounter "Locked Model" errors. Here is how to handle them:

The "Ghost" User: If a user’s computer crashes, the server might still think they are active. In the Multi-User Server administration tool, you can manually disconnect inactive users to release the locks.

Active Directory Issues: Ensure that all users have Read/Write/Modify permissions to the folder where the model is stored. The Multi-User Server manages the logic of the model, but Windows manages the file access.

Log Files: Always check the xs_multiuser_server.log file. It provides timestamped data on who joined the session and why a save might have failed. Is Multi-User Still Relevant?

With the rise of Tekla Model Sharing (Cloud), some wonder if the Multi-User Server is obsolete. The answer is no. For projects where data security prevents cloud storage, or for offices with high-speed internal networks but inconsistent external internet, the Multi-User Server 2.3.20 remains the most reliable way to deliver a project on time. Conclusion

The Tekla Structures Multi-User Server 2.3.20 is a "set-it-and-forget-it" tool that powers high-intensity detailing environments. By centralizing your model management and following basic network protocols, your team can focus on what matters most: accurate detailing and clash-free construction.