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Exception thrown: 'System.UnauthorizedAccessException' in OfficeIntegration.Outlook.dll Additional information: The property "http://schemas.microsoft.com/mapi/string/{00020386-0000-0000-C000-000000000046}/CheckInInfoID" does not support this op RRS feed

  • Question

  • Hi,

    I have written an OutllokAddin.In my email I have attached one draft email. When I open the email and try to open the attach draft email I got the below error.

     Exception thrown: 'System.UnauthorizedAccessException' in OfficeIntegration.Outlook.dll Additional information: The property "http://schemas.microsoft.com/mapi/string/{00020386-0000-0000-C000-000000000046}/CheckInInfoID"  does not support this operation.

    below is my code where SetProperty is throwing error.

    Interop.PropertyAccessor propertyAccessor = null;

    try
    {
    propertyAccessor = this.GetPropertyAccessor();
    propertyAccessor.SetProperty(propString, value);
    }

    I have faced this in office 2016. I believe same is also replicate in office 2019.

    When I create a new email I don't see the error. Only if I open the attachment I get the error.



    • Edited by Abanisamal Friday, December 6, 2019 9:42 AM
    Friday, December 6, 2019 9:32 AM