Newtonsoft.json: when I compile my unity player, it causes errors:PlatformNotSupportedException: Operation is not supported on this platform

[halley62373]

Source/destination types

// Put the types you are serializing or deserializing here

Source/destination JSON

{"message":"Place your serialized or deserialized JSON here"}

Expected behavior

Actual behavior

Steps to reproduce

// Your calls to Newtonsoft.Json here

Newtonsoft.Json works well in Unity Editor, but it didn't work when I compile to Unity player, what should I do?
Error_2019_4_15_17h_17.txt

[halley62373]

is this a bug?

[timstallinger]

Ive got the same problem. I use BSon Serialization though. In the Editor everything works fine but when I compile, it gives me the same Error. I use the Serialization for RosBridge with RosSharp in Unity. I will go back to JSon Serialization and let you know if that changed anything.
Edit: Didn't change anything.

[superzscy]

I encountered the same issue, but when i changed the "API Compatibility Level" to .Net 4.x, problem solved.

[Patryk-Szylin]

@superzscy Solved my issue too. This does not seem to have an impact on anything else. Does it?

[cdauphinee]

Is there any movement on this issue? It seems like the library isn't correctly detecting that dynamic code generation isn't supported.

[javenschuetz]

I'm getting this as of Jan 30/2020. I have read that setting the api compatibility level to .net 4.x will create issues on some platforms, eg, Linux, which I plan to deploy to.

• is there a fix coming for this any time soon?
• does anybody know if my concern about the .net 4.x compatibility level a valid one?

[Andor233]

Same issue here

[marcfervil]

Same issue as well, changing to 4.x fixed it, but I am worried it will not work on linux?

[jeewoo1127]

Same issue as well. It's solved on window but stuck on linux. Any solution for linux?

[QuakyCZ]

I encountered the same issue, but when i changed the "API Compatibility Level" to .Net 4.x, problem solved.

You're my life saver!

[cdtrang]

I encountered the same issue, but when i changed the "API Compatibility Level" to .Net 4.x, problem solved.

Changing "API Compatibility Level" in Unity configuration to .NET 4.x solved my issue, too. Thank you @superzscy