ASP.NET Core
A set of technologies in the .NET Framework for building web applications and XML web services.
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NullReferenceException from Exchange.WebServices.Managed.Net5
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(310.4, 81%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAR%3C/text%3E%3C/svg%3E)
Aditi.Rachna
21
Reputation points
Triggering mail from ASP.net Core MVC application, using Exchange.WebServices.Managed.Net5(https://www.nuget.org/packages/Exchange.WebServices.Managed.Net5/2.2.0).Intermittently getting the System.NullReferenceException: Object reference not set to an instance of an object., Sometimes mail gets send even after the exception. Why this error and how can it be solve?
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(73.60000000000001, 90%, 17%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EZL%3C/text%3E%3C/svg%3E)
Zhi Lv - MSFT 32,831 Reputation points Microsoft Vendor2022-04-28T01:32:38.537+00:00 Sometimes mail gets send even after the exception.
Do you know which line of code will show this exception? Try to use the Logging to collect the log information and capture which line of code will show this exception. If the issue relates the code written by yourself, you could add a condition statement to check whether the object is null before using it. Else if the issue relates the
Exchange.WebServices.Managed.Net5, since it is a third party package, you'd better to contact the owner.
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