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Office 365 EWS UploadItems Operation is failing RRS feed

  • Question

  • Hello, we are currently facing problem which occurs only in Office365 EWS. We are using UploadItems operation with Create action Update on Contact items and we always receive the error saying Unable to cast object of type 'Microsoft.Exchange.Data.StoreObjects.PropertyError' to type 'System.Byte[] EWS Office365 UploadItems - it is error from Exchange Web Services directly under Internal server error. This was working within our application for more than 2 or three years - just suddenly started failing with the error above.

    Full error is this:

    An internal server error occurred. The operation failed., Unable to cast object of type 'Microsoft.Exchange.Data.StoreObjects.PropertyError' to type 'System.Byte[]'.

    The error is going from Exchnage server

    Friday, March 2, 2018 8:51 AM