The Tekla Structures multi-user server installer installs the multi-user server as a service. When you have installed the server, the service is always available and it is automatically started when the server computer is started. There is no need to log in and no need to start the server manually every time you start your computer. Tekla Structures multi-user server allows many users to work on the same model simultaneously.

1. Download the multi-user server software installation file from Tekla Downloads.
2. Double-click the installation file to run the installation.
3. Follow the steps in the installation wizard to complete the installation.

   By default , the server is installed to:

   c:\Program Files (x86)\Tekla Structures Multiuser Server

   You cannot change the installation path during the installation.

   If you install the multi-user server on your own computer, the server name is the name of your computer.

   The multi-user server uses TCP/IP port 1238.

If you see an error message that the model is locked, it might be useful to restart the Tekla Structures multi-user server service. You can restart the multi-user server service without restarting the server computer.

1. Ensure that all users of the Tekla Structures multi-user server have signed out of Tekla Structures.
2. Find and open the computer that hosts the Tekla Structures multi-user server service.

   The name of the computer is the same as the server name that you type when you sign in to the multi-user model.

3. On the server computer, go to ..\ProgramData\TeklaStructuresServer.

   For example, C:\ProgramData\TeklaStructuresServer.

   In the ..\ProgramData\TeklaStructuresServer folder, there might be a file called tcpip_localhost_<xxxx>.db.

4. If the tcpip_localhost_<xxxx>.db file exists in the ..\ProgramData\TeklaStructuresServer folder, delete the file.

   If the tcpip_localhost_<xxxx>.db does not exist in the <root folder>\ProgramData\TeklaStructuresServer folder, continue to the next step.

5. Restart the Tekla Structures Multiuser Server service.
   1. In the Windows Start menu, type Services.
   2. In the search results, click Services.
   3. In the Services dialog box, find and select Tekla Structures Multiuser Server.
   4. Click Restart and wait until the Tekla Structures multi-user service restarts.
   Tip:

   As an alternative to these steps, you can use the Task Scheduler app in Windows to create a task that automatically restarts Tekla Structures multi-user server:

   net stop"" "Tekla Structures Multiuser Server"
   net start"" "Tekla Structures Multiuser Server"

ECHO.
ECHO ***STOPPING SERVICE***
ECHO.
net stop"" "Tekla Structures Multiuser Server"
ECHO DELETING MULTIUSER DATABASE
cd C:\ProgramData\TeklaStructuresServer\
del /f tcpip_localhost_1238.db
ECHO STARTING SERVICE
net start"" "Tekla Structures Multiuser Server"
ECHO DONE 

You can have several instances of the Tekla Structures multi-user server service on the same server computer.

1. Find and open the server computer that hosts the multi-user server service.

   The name of the server computer is the same as the server name that you enter when you sign in to the multi-user model.

2. Go to C:\Program Files (x86)\Tekla Structures Multiuser Server.
3. To create a new instance of the Tekla Structures multi-user server service, right-click TS_MUSaas_Install.
4. Select Run as administrator and click Yes to confirm.

   The related Command Prompt window opens. You can see the default service name, port number and destination for the new instance. The last character of the service name is the identifier of the instance.

   The default identifier is 2, whereas the default port number is 1239.

5. If necessary, change the identifier or port number of the new instance.

   To	Do this
   Change the identifier	Press I on the keyboard. Press Enter. Type the new identifier. Press Enter to change the identifier.
   Change the port number	Press P on the keyboard. Press Enter. Type the new port number. Press Enter to change the port number.

6. When you are ready, press any key on the keyboard except for I, P, or Q.

   A new instance of the Tekla Structures multi-user server is installed and started.

7. Press any key on the keyboard to close the Command Prompt window.

If you need to uninstall an instance of the Tekla Structures multi-user server service, do the following:

1. Find and open the server computer that hosts the multi-user server service.

   The name of the server computer is the same as the server name that you enter when you sign in to the multi-user model.

2. Go to C:\Program Files (x86)\Tekla Structures Multiuser Server.
3. To create a new instance of the Tekla Structures multi-user server service, right-click TS_MUSaas_Uninstall.
4. Select Run as administrator and click Yes to confirm.

   The related Command Prompt window opens.

5. Type the identifier of the instance that you want to uninstall, and press Enter.

   The identifier is the last character of the instance name. For example, if the instance name is Tekla Structures Multiuser Server 2, the identifier is 2.

6. Type Y to confirm uninstalling the instance, and press Enter.

   The selected instance of the Tekla Structures multi-user server service is stopped and uninstalled. All files stored in the associated multi-user server folder are deleted.

7. Press any key on the keyboard to close the Command Prompt window.

You can change the Tekla Structures server of a multi-user model.

1. On the File menu, click Sharing > Change multi-user server.
2. Enter the new server name or select it from the list.
3. Click Change.

   If the connection to the new server cannot be established, the old connection is restored.