JavaScript API
An Office service that supports add-ins to interact with objects in Office client applications.
1,042 questions
Could not load file or assembly 'Microsoft.Diagnostics.FastSerialization', An operation is not legal in the current state. (0x80131509
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Raghu M
0
Reputation points
I have C# project that generates a DLL and exposes static methods to JavaScript (using Microsoft.JavaScript.NodeApi). The DLL exported methods launches an ETL collection. When this static method is called from C#, it works as expected. But calling this from javascript throws the below error:
Error: Could not load file or assembly 'Microsoft.Diagnostics.FastSerialization, Version=3.1.17.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. An operation is not legal in the current state. (0x80131509)
I have no idea what this means and searching online resulted in no luck. Any help/guidance is much appreciated.
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