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POCannot catch ADException in Powershell script
 

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    <p>I'm using the ActiveDirectory Powershell module to add some groups to our domain. During this process, the script might attempt to add a user to a group they're already a member of. This is an exception that I should be able to handle, but, I cannot seem to catch it. No matter what I do, I see red text in the powershell console.</p> <p>I simplified this all down to a few testable steps.</p> <pre><code>New-ADGroup -Path "ou=temp,dc=domain,dc=tld" -GroupScope Global -Identity testGroup Get-ADGroup -Identity testGroup | Add-ADGroupMember -Members testUser try { Get-ADGroup -Identity testGroup | Add-ADGroupMember -Members testUser } catch { Write-Warning "Caught exception!" } </code></pre> <p>I expect to see "Caught exception!" in yellow text, however, what I actually get is:</p> <pre><code>Add-ADGroupMember : The specified account name is already a member of the group At line:1 char:40 + try {Get-ADGroup -Identity testGroup | Add-ADGroupMember -Members testUser} ca ... + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (CN=testGroup,OU=Temp,DC=domain,DC=tld:ADGroup) [Add-ADGroupMember], ADException + FullyQualifiedErrorId : The specified account name is already a member of the group,Microsoft.ActiveDirectory.Management.Commands.AddADGroupMember </code></pre> <p>All in red text. </p> <p>I expect that I'm overlooking something simple. I'd appreciate any input.</p> <p>Edit: PS version information as requested:</p> <pre><code>C:\&gt; $PSVersionTable Name Value ---- ----- PSVersion 3.0 WSManStackVersion 3.0 SerializationVersion 1.1.0.1 CLRVersion 4.0.30319.18331 BuildVersion 6.2.9200.16481 PSCompatibleVersions {1.0, 2.0, 3.0} PSRemotingProtocolVersion 2.2 </code></pre>
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    1. USbshacklett
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    1. COWhat PowerShell version are you running?
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      1. USAnsgar Wiechers
    2. CO@AnsgarWiechers I'm on PS version 3.
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      1. USbshacklett
 

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