# Prerequisites for running the WASM modules on the server

Besides the usual .NET Framework requirements that the TimeLine Server has, in order to run the TimeLine WASM service, you need to make sure you have the ASP.NET Core Runtime 3.1.xx installed.

This can be downloaded from the following URL: [https://dotnet.microsoft.com/download/dotnet/thank-you/runtime-aspnetcore-3.1.17-windows-hosting-bundle-installer](https://dotnet.microsoft.com/download/dotnet/thank-you/runtime-aspnetcore-3.1.17-windows-hosting-bundle-installer)

### Ensure mandant is ready for login via web

To log-in via web for a mandant, make sure you perform a 'check connection' from the TimeLine Server Console for the mandant. To do this you must follow the next steps:

In TimeLine Server, on the tab Profiles, you must select the mandant you want to use and perform a connection check by pressing the button "Check" or select "Test Connection" from the Right Click Context Menu.

![](https://2522353545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MXf5GuikRIHooatf_sm%2F-MhrEIViqZyWWlL9Xd-m%2F-MhrWTUQpOFDkIHBs7mk%2FCheck_connection_server_1.png?alt=media\&token=3d8f8176-a0eb-43ca-a286-8f6ccf483eba)

You will be greeted with a box for the User Information.

![](https://2522353545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MXf5GuikRIHooatf_sm%2F-Mhr_VjNe9DXasMO9cb8%2F-MhrbW5xIY1vRejScGtm%2FCheck_connection_server_2.png?alt=media\&token=7a1a3d9d-c164-4a0e-a9e3-8f5e34949ab9)

If after pressing ok you see the "Connection successful", the mandant is ready.

![](https://2522353545-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MXf5GuikRIHooatf_sm%2F-Mhr_VjNe9DXasMO9cb8%2F-Mhrbd_MXF0cPDazr5O-%2FCheck_connection_server_3.png?alt=media\&token=5614a69d-5094-4b6c-8433-67033c2bf828)
