Getting an error when starting a project

Question

When creating a F# project I always get this error, Object reference not set to an instance of an object , occurs when you try to use an object that has not yet been created. Which I don't understand how to fix, I tried by deleting the folders below and restarting VS but I still can't created a project, what am I doing wrong?

C:\Users%userprofile%\AppData\Local\Microsoft\VisualStudio C:\Users%userprofile%\AppData\Local\Microsoft\VSCommon

Answer 1

Hello @code_g33k,

Welcome to Microsoft Q&A forum.

I don't think you did something wrong. But this error might only appear on specific F# projects. Based on my test, this issue appears on "Blank App (Android)" F# project.

I previously noticed this/similar issue and reported it on our Developer Community, here's the ticket link: Get an error(Exception of type System.Exception was thrown) while creating a F# Blank App (iPad) project. The ticket was marked as duplicate to this ticket and it's still under investigation.

I would suggest you kindly follow that ticket, vote and add comments there or submit a new ticket on our Developer Community. If there's any latest information or fix, you will be informed.

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Update1:

I double tested in VS 2022 and VS 2019(on the same machine). The F# project created correctly in VS 2019 but failed in VS 2022.

I submit a new ticket here: Get an "Object reference not set to an instance of an object" error when creating a F# Blank App (Android) project in VS 2022.

I will inform you if there's any update.

Thanks for your understanding, have a nice day.

Sincerely,

Tianyu

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