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                    <h1 id="test-dbaspn">Test-DbaSpn</h1>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td><strong>Author</strong></td>
<td>Drew Furgiuele (@pittfurg), port1433.com , niphlod</td>
</tr>
<tr>
<td><strong>Availability</strong></td>
<td>Windows, Linux, macOS</td>
</tr>
</tbody>
</table>
<p> </p>
<p>Want to see the source code for this command? Check out <a href="https://github.com/dataplat/dbatools/blob/master/public/Test-DbaSpn.ps1">Test-DbaSpn</a> on GitHub.
<br>
Want to see the Bill Of Health for this command? Check out <a href="https://dataplat.github.io/boh#Test-DbaSpn">Test-DbaSpn</a>.</p>
<h2 id="synopsis">Synopsis</h2>
<p>Test-DbaSpn will determine what SPNs <em>should</em> be set for a given server (and any instances of SQL running on it) and return<br />
whether the SPNs are set or not.</p>
<h2 id="description">Description</h2>
<p>This function is designed to take in a server name(s) and attempt to determine required SPNs. It was initially written to mimic the (previously) broken functionality of the Microsoft Kerberos Configuration manager and SQL Server 2016.</p>
<ul>
<li>For any instances with TCP/IP enabled, the script will determine which port(s) the instances are listening on and generate the required SPNs.</li>
<li>For named instances NOT using dynamic ports, the script will generate a port-based SPN for those instances as well.</li>
<li>At a minimum, the script will test a base, port-less SPN for each instance discovered.</li>
</ul>
<p>Once the required SPNs are generated, the script will connect to Active Directory and search for any of the SPNs (if any) that are already set. The function will return a custom object(s) that contains the server name checked, the instance name discovered, the account the service is running under, and what the &quot;required&quot; SPN should be. It will also return a boolean property indicating if the SPN is set in Active Directory or not.</p>
<h2 id="syntax">Syntax</h2>
<pre><code>Test-DbaSpn
    [-ComputerName] &lt;DbaInstanceParameter[]&gt;
    [[-Credential] &lt;PSCredential&gt;]
    [-EnableException]
    [&lt;CommonParameters&gt;]

</code></pre>
<p> </p>
<h2 id="examples">Examples</h2>
<p> </p>
<h5 id="example-1">Example:  1</h5>
<pre><code>PS C:\&gt; Test-DbaSpn -ComputerName SQLSERVERA -Credential ad\sqldba
</code></pre>
<p>Connects to a computer (SQLSERVERA) and queries WMI for all SQL instances and return &quot;required&quot; SPNs. It will then take each SPN it generates<br>
and query Active Directory to make sure the SPNs are set.<br></p>
<h5 id="example-2">Example:  2</h5>
<pre><code>PS C:\&gt; Test-DbaSpn -ComputerName SQLSERVERA,SQLSERVERB -Credential ad\sqldba
</code></pre>
<p>Connects to multiple computers (SQLSERVERA, SQLSERVERB) and queries WMI for all SQL instances and return &quot;required&quot; SPNs.<br>
It will then take each SPN it generates and query Active Directory to make sure the SPNs are set.<br></p>
<h5 id="example-3">Example:  3</h5>
<pre><code>PS C:\&gt; Test-DbaSpn -ComputerName SQLSERVERC -Credential ad\sqldba
</code></pre>
<p>Connects to a computer (SQLSERVERC) on a specified and queries WMI for all SQL instances and return &quot;required&quot; SPNs.<br>
It will then take each SPN it generates and query Active Directory to make sure the SPNs are set. Note that the credential you pass must have be a valid login with appropriate rights on the domain<br></p>
<h3 id="required-parameters">Required Parameters</h3>
<h5 id="computername">-ComputerName</h5>
<p>The computer you want to discover any SQL Server instances on. This parameter is required. <br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>True</td>
</tr>
<tr>
<td>Pipeline</td>
<td>true (ByValue)</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h3 id="optional-parameters">Optional Parameters</h3>
<h5 id="credential">-Credential</h5>
<p>The credential you want to use to connect to the remote server and active directory.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td></td>
</tr>
</tbody>
</table>
<h5 id="enableexception">-EnableException</h5>
<p>By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.<br />
This avoids overwhelming you with &quot;sea of red&quot; exceptions, but is inconvenient because it basically disables advanced scripting.<br />
Using this switch turns this &quot;nice by default&quot; feature off and enables you to catch exceptions with your own try/catch.<br></p>
<table>
<thead>
<tr>
<th></th>
<th></th>
</tr>
</thead>
<tbody>
<tr>
<td>Alias</td>
<td></td>
</tr>
<tr>
<td>Required</td>
<td>False</td>
</tr>
<tr>
<td>Pipeline</td>
<td>false</td>
</tr>
<tr>
<td>Default Value</td>
<td>False</td>
</tr>
</tbody>
</table>
<p> </p>

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