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	<title>Comments on: Adding a Mailbox Server Role to Exchange 2010: &#8220;Database is mandatory on UserMailbox&#8221;</title>
	<atom:link href="http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/feed/" rel="self" type="application/rss+xml" />
	<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/</link>
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	<item>
		<title>By: Royce</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-10225</link>
		<dc:creator>Royce</dc:creator>
		<pubDate>Fri, 13 Jan 2012 21:28:31 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-10225</guid>
		<description>MOST EXCELLENT!</description>
		<content:encoded><![CDATA[<p>MOST EXCELLENT!</p>
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	</item>
	<item>
		<title>By: Anthony</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-8998</link>
		<dc:creator>Anthony</dc:creator>
		<pubDate>Wed, 23 Nov 2011 20:14:18 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-8998</guid>
		<description>Yes thank you very much for this.  For us it was also the DiscoverySearchMailbox that caused the problem.  Updated the homeMDB attribute and ran the SP1 installer again and it worked!</description>
		<content:encoded><![CDATA[<p>Yes thank you very much for this.  For us it was also the DiscoverySearchMailbox that caused the problem.  Updated the homeMDB attribute and ran the SP1 installer again and it worked!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Rob Brown</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-3021</link>
		<dc:creator>Rob Brown</dc:creator>
		<pubDate>Thu, 09 Dec 2010 10:42:28 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-3021</guid>
		<description>Thank you very much for this, it saved our bacon when Hub transport refused to install.

Thank you

Rob</description>
		<content:encoded><![CDATA[<p>Thank you very much for this, it saved our bacon when Hub transport refused to install.</p>
<p>Thank you</p>
<p>Rob</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Jim</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-2817</link>
		<dc:creator>Jim</dc:creator>
		<pubDate>Mon, 29 Nov 2010 15:07:27 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-2817</guid>
		<description>I was running into a similar problem as a previous admin had messed up an exchange sp1 install.

In my case it wasn&#039;t the federated mailbox but the discovery mailbox.  A quick check of the setup log will show you exactly which mailbox your failing on.

[WARNING] The object domain.local/Users/DiscoverySearchMailbox {D919BA05-46A6-415f-80AD-7E09334BB852} has been corrupted, and it&#039;s in an inconsistent state. The following validation errors happened:
[11/29/2010 15:02:07.0855] [2] [WARNING] Database is mandatory on UserMailbox.
[11/29/2010 15:02:07.0855] [2] [WARNING] The property value you specified, &quot;16&quot;, isn&#039;t defined in the Enum type &quot;Nullable`1&quot;.
[11/29/2010 15:02:07.0855] [2] [WARNING] Database is mandatory on UserMailbox.</description>
		<content:encoded><![CDATA[<p>I was running into a similar problem as a previous admin had messed up an exchange sp1 install.</p>
<p>In my case it wasn&#8217;t the federated mailbox but the discovery mailbox.  A quick check of the setup log will show you exactly which mailbox your failing on.</p>
<p>[WARNING] The object domain.local/Users/DiscoverySearchMailbox {D919BA05-46A6-415f-80AD-7E09334BB852} has been corrupted, and it&#8217;s in an inconsistent state. The following validation errors happened:<br />
[11/29/2010 15:02:07.0855] [2] [WARNING] Database is mandatory on UserMailbox.<br />
[11/29/2010 15:02:07.0855] [2] [WARNING] The property value you specified, &#8220;16&#8243;, isn&#8217;t defined in the Enum type &#8220;Nullable`1&#8243;.<br />
[11/29/2010 15:02:07.0855] [2] [WARNING] Database is mandatory on UserMailbox.</p>
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	</item>
	<item>
		<title>By: Klaus</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-1581</link>
		<dc:creator>Klaus</dc:creator>
		<pubDate>Thu, 16 Sep 2010 13:10:33 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-1581</guid>
		<description>thanks for that. that helped me out while moving the arbitration mailboxes to another database.</description>
		<content:encoded><![CDATA[<p>thanks for that. that helped me out while moving the arbitration mailboxes to another database.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Reuben</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-1370</link>
		<dc:creator>Reuben</dc:creator>
		<pubDate>Wed, 25 Aug 2010 22:34:11 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-1370</guid>
		<description>Thank you very much you saved me alot of agony and pain. After i did your solution it installed like a sham.</description>
		<content:encoded><![CDATA[<p>Thank you very much you saved me alot of agony and pain. After i did your solution it installed like a sham.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Carl Farrington</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-1185</link>
		<dc:creator>Carl Farrington</dc:creator>
		<pubDate>Wed, 21 Jul 2010 00:56:53 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-1185</guid>
		<description>Thanks very much. Same problem when upgrading Exchange 2010 to SP1-beta. I had the empty homeMDB on three of the special guid-labelled mailboxes. All working now.
cheers</description>
		<content:encoded><![CDATA[<p>Thanks very much. Same problem when upgrading Exchange 2010 to SP1-beta. I had the empty homeMDB on three of the special guid-labelled mailboxes. All working now.<br />
cheers</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: John</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-1067</link>
		<dc:creator>John</dc:creator>
		<pubDate>Sun, 20 Jun 2010 20:00:00 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-1067</guid>
		<description>That worked for me.  Thanks!</description>
		<content:encoded><![CDATA[<p>That worked for me.  Thanks!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Joe</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-812</link>
		<dc:creator>Joe</dc:creator>
		<pubDate>Sun, 04 Apr 2010 08:49:35 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-812</guid>
		<description>I had the same issue with the same apparent cause (manual removal of Exchange), and this fix worked for me.  Thank you!</description>
		<content:encoded><![CDATA[<p>I had the same issue with the same apparent cause (manual removal of Exchange), and this fix worked for me.  Thank you!</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Phill</title>
		<link>http://www.paulbrown.us/2009/12/adding-a-mailbox-server-role-to-exchange-2010-database-is-mandatory-on-usermailbox/comment-page-1/#comment-788</link>
		<dc:creator>Phill</dc:creator>
		<pubDate>Mon, 29 Mar 2010 10:13:10 +0000</pubDate>
		<guid isPermaLink="false">http://www.paulbrown.us/?p=246#comment-788</guid>
		<description>Hi. I found that Federated EMail User, but in my root domain is no exchange, so that user have not those attributes to edit like homeMDB. And now?</description>
		<content:encoded><![CDATA[<p>Hi. I found that Federated EMail User, but in my root domain is no exchange, so that user have not those attributes to edit like homeMDB. And now?</p>
]]></content:encoded>
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