# Learning to setup F# dotnet projects correctly for language server

**URL:** https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649
**Category:** General
**Tags:** beginners
**Created:** [March 9, 2021, 8:48pm UTC](https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649 "2021-03-09T20:48:49Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![simonvdm](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/simonvdm/32/899_2.png) [@simonvdm](https://forums.fsharp.org/u/simonvdm)
#### Post date: [March 9, 2021, 8:48pm UTC](https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649/1 "2021-03-09T20:48:49Z")

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Hi there,

I’ve been learning F# for over a year now (mostly using scottwlashin’s blog and [exercism.io](http://exercism.io)) and I am completely in love with the language.

One thing I keep having trouble with is setting up my projects correctly. I’ll type “dotnet new classlib --lang F#; dotnet build” and will get a compiling project … but no language server support.  
Last time that happened I managed to get the project setup correctly after a 1h search on the web … now I’m facing the same issue and don’t know which blogs/docs helped me last time.

I don’t whether it’s a matter of finding the right resource, fixing a quirky setup or grokking something that’s eluding me.  
Any pointers welcome.

Details: I’m using Visual Code Studio on MacOSX with F# language server, C# and Ionide-fsharp plugins installed. This works great on my [exercism.io](http://exercism.io) projects (code provided by platform) and on some of my past projects. Yet I just created a project and the language server is not working.  
It is giving lots of errors but those are also present on the projects where it _does_ work so I don’t know what to make of it. What is actually required for the language server to work?

> Failed to create code lens because project options failed to load  
> No .fsproj or .fsx file references \<my .fs file\> (even though it _does_ reference the file)  
> No cracked project references \<my .fs file\>, looking at uncracked projects…

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### Author: ![Scott](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/scott/32/57_2.png) [@Scott](https://forums.fsharp.org/u/Scott)
#### Post date: [March 13, 2021, 6:35pm UTC](https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649/2 "2021-03-13T18:35:20Z")

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@chethusk should be able to shed some light on this for you.

By “language server not working” do you mean that you’re not getting auto completion?

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### Author: ![chethusk](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/chethusk/32/11_2.png) [@chethusk](https://forums.fsharp.org/u/chethusk)
#### Post date: [March 13, 2021, 6:44pm UTC](https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649/3 "2021-03-13T18:44:19Z")

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@Scott thanks for the ping!

I think @simonvdm also posted on the FSSF slack and got their problem resolved, but the root issue was:

- having fsharp-language-server _and_ Ionide installed (they are not able to be isntalled at the same time),
- then, when working in fsx script files an unfamiliarity with the need to `open` namespaces from the referenced dlls

but after that, all good to go!

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### Author: ![simonvdm](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.fsharp.org/simonvdm/32/899_2.png) [@simonvdm](https://forums.fsharp.org/u/simonvdm)
#### Post date: [March 14, 2021, 8:02pm UTC](https://forums.fsharp.org/t/learning-to-setup-f-dotnet-projects-correctly-for-language-server/1649/4 "2021-03-14T20:02:49Z")

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Exactly. Thank you for the follow-up @Scott and @chethusk. Much appreciated.