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Fixed in Unity 2019.1



Found in


Issue ID




[UWP] [IL2CPP] MSAL: Error trying to serialize the value to be written to the application data store

Universal Windows Platform



Priority: 3Not yet prioritized for a release


Severity: 2Core functionality majorly impacted

Steps to reproduce:
1. Download attached project
2. Build UWP project with IL2CPP backend.
3. Edit Il2CPP file "\VS Solution\Il2CppOutputProject\IL2CPP\libil2cpp\vm\Runtime.cpp" and make 'framework_version_for' method return "4.5" instead of "4.0".
4. Run the UWP app.
5. Popup to enter Microsft credentials will appear. Login using any valid Microsoft account and answer YES for the consent question.

Results: After the credentials have been entered successfully, a crash occurs while writing to the application data store.

Reproduced with: 2018.3.0a4, 2018.2.0f2

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