Tekla Structures Multi User Server 23 20 _verified_ May 2026

Tekla Structures Multiuser Server 2.3.20 (often referred to as version 23 20 in some contexts) is a software application that enables multiple users to work on the same 3D model simultaneously in real-time. It acts as a central hub that manages project data and prevents data conflicts during collaborative modeling. Google Groups Core Functionalities

The server performs several critical management tasks to maintain model integrity: Access Control

: Locks the model when a user is saving or numbering to prevent simultaneous data writes. User Tracking

: Identifies client computers and keeps a live log of active users in the multi-user model. Drawing Management

: Assigns identification numbers for general arrangement and multi-drawings. Conflict Prevention

: Provides warnings if another user is currently editing a drawing or the same model object. Tekla User Assistance Installation and Setup

To deploy the multi-user environment, you must install the server package on a computer accessible to all team members via a local area network (LAN). Google Groups Package Compatibility

: The Multiuser Server version 2.3 is compatible with Tekla Structures version 17.0 and later. Service Deployment

: After installation, the server runs as a background service called xs_server.exe Network Requirements Tekla Structures Multi User Server 23 20

: It uses the TCP/IP protocol, typically communicating through port System Location : The default installation folder is usually C:\Program Files (x86)\Tekla Structures Multi-user Server Google Groups Model Conversion

Users can convert existing models to multi-user mode to begin collaborative work: Open the Model : Navigate to the menu and select Convert to a multi-user model Specify Server

: Enter the multi-user server name or IP address in the dialog box.

. Once finished, the model can be opened in multi-user mode from the "All models" list. Google Groups Best Practices

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. Tekla Structures Multiuser Server 2

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 Running Both Versions on the Same Physical Machine

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.


Running Both Versions on the Same Physical Machine

A common query for Tekla Structures Multi User Server 23 20 is: Can I run version 23 and version 20 on the same server hardware?

Yes, but with precautions. Both installers want to bind to the same ports. To resolve this:

  1. Install one version normally (e.g., version 23 on ports 135/12000-12100).
  2. For the second version (20):
    • During install, choose a different installation folder (e.g., C:\Tekla20Server).
    • Manually edit the multiuser_server.conf file for version 20. Change the PortRanges to 12010-12110.
    • Change the RPC endpoint port via registry: HKEY_LOCAL_MACHINE\SOFTWARE\Tekla\MultiuserServer\20.0\Ports.
  3. Use different TCP ports (e.g., version 23 listens on 135; version 20 listens on 136).
  4. Clients connect accordingly: Tekla 23 clients point to ServerIP:135; Tekla 20 clients to ServerIP:136.

Tekla Structures Multi-User Server 23.20 — Executive Report

Migration Strategy: Moving from Version 20 to 23

If your firm is currently on Tekla Structures Multi User Server 20 but planning to upgrade to version 23, follow this phased approach:

  1. Backup all .db1/.db2 models.
  2. Install Server 23 on a new VM or dedicated hardware (do not upgrade in-place).
  3. Use Tekla Structures 23 client to open each model from Server 20. It will prompt an upgrade.
  4. Test all custom components and drawings in the upgraded model.
  5. Run both servers in parallel for one month. Keep version 20 server read-only for reference.
  6. Decommission Server 20 only after final validation.

5. Client Connection Settings

In Tekla Structures client:

  1. Go to File > Open > Model.
  2. Select “Multi-user model”.
  3. Enter server IP/hostname and port (e.g., 192.168.1.50:27000).
  4. Ensure client and server major versions match exactly (e.g., TS 23.0 client → MU server 23.0).

Tekla Structures Multi-User Server: Version 23 and 20 Overview