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works fine. currently have 2 apps connecting to Ex2016-PF. <pre><code class="code-10 nolinks" id="code-20-43097708-1">&nbsp; &nbsp; &nbsp; &nbsp; /// &lt;summary&gt;
&nbsp; &nbsp; &nbsp; &nbsp; /// Open a connection to Exchange using Exchange Web Services API
&nbsp; &nbsp; &nbsp; &nbsp; /// &lt;/summary&gt;
&nbsp; &nbsp; &nbsp; &nbsp; public EWS()
&nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //Debug.WriteLine ("EWS Start 1");
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ServicePointManager.ServerCertificateValidationCallback += (sender, certificate, chain, sslPolicyErrors) =&gt; true;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //alternately point to a function that only allows certain certificate errors (eg self signed cert) , not all
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //ServicePointManager.ServerCertificateValidationCallback = CertificateValidationCallBack;

&nbsp; &nbsp; &nbsp; &nbsp; }

&nbsp; &nbsp; &nbsp; &nbsp; /// &lt;summary&gt;
&nbsp; &nbsp; &nbsp; &nbsp; /// Connect to EWS using previous URL and Credentials
&nbsp; &nbsp; &nbsp; &nbsp; /// &lt;/summary&gt;
&nbsp; &nbsp; &nbsp; &nbsp; /// &lt;returns&gt;ExchangeWebService&lt;/returns&gt;
&nbsp; &nbsp; &nbsp; &nbsp; public ExchangeService GetExchangeService()
&nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (_EWS == null)
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //connect to server
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; _EWS = new ExchangeService(exchVersion) { Url = _uriEWS, Credentials = NetwCredential };
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SetVersionInfo();
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return _EWS;
&nbsp; &nbsp; &nbsp; &nbsp; }


&nbsp; &nbsp; &nbsp; &nbsp; public FolderId GetPublicFolderRootId()
&nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; //ExchangeService service = GetExchangeService();
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; try
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Folder folder = Folder.Bind(_EWS,
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; new FolderId(WellKnownFolderName.PublicFoldersRoot));
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; return folder.Id;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; catch { return null; }
&nbsp; &nbsp; &nbsp; &nbsp; }


</code></pre>
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Hi, &nbsp;Thanks so much for your reply and examples really helpful! Although, I'm stuck at searching in the public folders for emails... Is there any event in EWS to detect when new emails in Public Folders arrive? There must be a way to achieve this rather than traversing public folder' sub folders searching new emails Thanks
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<div>
Hi, just an update - made some progress with searching email items. I still would like to know if there is an event in EWS that detects when new emails arrive? Thanks
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Seven0fNine

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<div class="content wysiwyg-content">
Is it possible to connect to Exchange 2016 Public Folders via EWS as I want to scan for new Emails in folders? 
 
I can perform this on Shared Mailboxes (Inboxes), but how is this achieved on Public Folder? 
 
Any help is very much appreciated, Thank you
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</div>

Is it possible to connect to Exchange 2016 Public Folders via EWS as I want to scan for new Emails in folders?

I can perform this on Shared Mailboxes (Inboxes), but how is this achieved on Public Folder?

Any help is very much appreciated, Thank you

C# using EWS to connect  to Exchange 2016 Public Folders

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).