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1. First gather and document the legacyExchangeDn value of the Distribution Group (DG) you want to convert:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-1"><span>Get-DistributionGroup &lt;group email address&gt; | fl legacyexchangedn</span>
</code></pre>
2. Assuming you want all current members of the group to have access to the shared mailbox you will create, export the member list of the group and cache in the $users variable:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-2"><span>$users = Get-DistributionGroupMember &lt;group email address&gt;</span>
<span>$users.primarysmtpaddress | Out-File users.txt</span>
</code></pre>
3. After verifying the contents of users.txt is correct, delete the Distribution Group:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-3"><span>Remove-DistributionGroup &lt;group email address&gt; -Confirm:$false</span>
</code></pre>
4. Without closing Exchange Mangement Shell, create a new shared mailbox using EMC or EMS (I assume you know how to do this part).<br />
<br />
5. In the same EMS session you were working from previously, run this command:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-4"><span>foreach ($user in $users) {</span>
<span>    Add-MailboxPermission &lt;shared mailbox email address&gt; -User $user.primarysmtpaddress -AccessRights fullaccess</span>
<span>}</span>
</code></pre>
6. If you accidentally closed the EMS session that had the $users variable, run this command instead:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-5"><span>foreach ($user in (Get-Content users.txt)) {</span>
<span>    Add-MailboxPermission &lt;shared mailbox email address&gt; -User $user -AccessRights fullaccess</span>
<span>}</span>
</code></pre>
7. Save the legacyExchangeDn value saved in step 1 as an x500 proxy for the shared mailbox to maintain internal routing:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41440426-6"><span>Set-Mailbox &lt;shared mailbox email address&gt; -EmailAddresses @{add='x500:insertlegacyexchangedn'}</span>
</code></pre>
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In Step 2 the users.txt is empty. Is this normal?
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<div>
Yes please close it. Thank so very much Jason for your help.
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<div>
The solution performed satisfactory. I could not use all the commands &nbsp;I used what I could to get the result I wanted.
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<div class="content wysiwyg-content">
I can you provide instructions on how to convert exchange 2010 distribution group to shared mailbox. I also need to know how to create an x500 address.
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I can you provide instructions on how to convert exchange 2010 distribution group to shared mailbox. I also need to know how to create an x500 address.

CONVERT EXCHANGE 2010 DISTRIBUTION GROUP TO SHARED MAILBOX

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.