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 <h3>The Issue:</h3><p>So while working on a new Exchange Migration project, I have encountered a weird issue where I could see users migration batch status complaining about being stalled due to (Big Funnel).</p><div> 
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 </div><p>The error is showing as in the below screenshot and it doesn&rsquo;t occur instantly after you start the migration of the user but right after it starts.</p><blockquote></blockquote><p>StalledDueToTarget_BigFunnel 68.47 MB (71,795,512 bytes) 20</p><p>User StalledDueToTarget_BigFunnel 37.2 MB (39,003,538 bytes) 20</p><p>User2 StalledDueToTarget_BigFunnel 14.71 MB (15,421,154 bytes) 20</p><p>User3 StalledDueToTarget_BigFunnel 44.2 MB (46,345,009 bytes) 20</p><p>User4 StalledDueToTarget_BigFunnel 4.647 MB (4,872,404 bytes) 20</p><p>User5 StalledDueToTarget_BigFunnel 14.47 MB (15,169,768 bytes) 20</p><p>User6 ; StalledDueToTarget_BigFunnel 171 MB (179,280,335 bytes) 20</p><p>User7 StalledDueToTarget_BigFunnel 753.4 MB (789,980,880 bytes) 20</p><p>User8 StalledDueToTarget_BigFunnel 18.35 MB (19,236,680 bytes) 20</p><p>User9 StalledDueToTarget_BigFunnel 205.9 MB (215,951,208 bytes) 20</p><p>User10 StalledDueToTarget_BigFunnel 166.2 MB (174,243,238 bytes) 20</p><p>User11 StalledDueToTarget_BigFunnel 13.81 MB (14,481,739 bytes) 20</p><p>User12 StalledDueToTarget_BigFunnel</p><p><a href="https://www.moh10ly.com/wp-content/uploads/2019/12/image-7.png"><img style="margin: 0px; display: inline; background-image: none;" title="image" src="https://www.moh10ly.com/wp-content/uploads/2019/12/image_thumb-7.png" alt="image" width="826" height="678" border="0"></a> 
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 </div><blockquote>
<h3>Error Message</h3>
<p>Request &lsquo;domain.com/CompanyUSER/Region1/User1&rsquo; (b5dbf3ff-21a1-4ec1-a29c-15b794a17386) failed.</p>
<p>Error code: -2146233088</p>
<p>Connection to the Content Transformation Service has failed.</p>
<p>Context:</p>
<p>&mdash;&mdash;&ndash;</p>
<p>Operation: IMapiFxProxy.ProcessRequest</p>
<p>OpCode: TransferBuffer</p>
<p>DataLength: 31680</p>
<p>&mdash;&mdash;&ndash;</p>
<p>Operation: IMapiFxProxy.ProcessRequest</p>
<p>Operation: IMapiFxProxy.ProcessRequest</p>
<p>OperationSide: Target</p>
<p>b5dbf3ff-21a1-4ec1-a29c-15b794a17386 (Primary)</p>
<p>OpCode: TransferBuffer</p>
<p>DataLength: 31680</p>
<p>&mdash;&mdash;&ndash;</p>
<p>Operation: IMailbox.ExportMessages</p>
<p>Operation: IMailbox.ExportMessages</p>
<p>OperationSide: Source</p>
<p>b5dbf3ff-21a1-4ec1-a29c-15b794a17386 (Primary)</p>
<p>Flags: SkipItemValidation</p>
<p>PropTags: (null)</p>
<p>&mdash;&mdash;&ndash;</p>
<p>>;>;>;>; Scheduled WorkItems: EnumerateFolderMessages(P:29792,R:0,S:0,C:14); EnumerateFolderMessages(P:29807,R:0,S:0,C:24,Cnt=3); WriteFolderMessages(P:0,R:0,S:0,C:686); EnumerateFolderMessages(P:30554,R:0,S:2,C:55); EnumerateFolderMessages(P:30612,R:0,S:0,C:36,Cnt=2); WriteFolderMessages(P:3,R:0,S:0,C:301); EnumerateFolderMessages(P:30975,R:0,S:1,C:21); WriteFolderMessages(P:2,R:0,S:0,C:97); EnumerateFolderMessages(P:31094,R:0,S:0,C:18,Cnt=6); EnumerateFolderMessages(P:31279,R:0,S:0,C:19)</p>
<p>&mdash;&mdash;&mdash;&mdash;&ndash;</p>
<p>The Microsoft Exchange Mailbox Replication service was unable to save changes to request.</p>
<p>Request: &lsquo;9a444721-80e2-4cf8-8c81-8a3afe3dc775&rsquo; (bbc2c66e-857e-4ba6-8462-9d66da73d400)</p></blockquote><blockquote><p>Database: DB01</p></blockquote><h3>Error:</h3><p>The request has been temporarily postponed because a database has failed over. The Microsoft Exchange Mailbox Replication service will attempt to continue processing the request when capacity becomes available on the new server hosting the database.</p><p><a href="https://www.moh10ly.com/wp-content/uploads/2019/12/image-8.png"><img style="margin: 0px; display: inline; background-image: none;" title="image" src="https://www.moh10ly.com/wp-content/uploads/2019/12/image_thumb-8.png" alt="image" width="1444" height="942" border="0"></a></p><p>Looking at the event ID number 1114 it mentions there seems to be an issue with the request seems there might be an issue with the mailbox being moved.</p><p>To dig deeper I am going to search some of the users reporting the same error by using their GUID</p><p><a href="https://www.moh10ly.com/wp-content/uploads/2019/12/image-9.png"><img style="margin: 0px; display: inline; background-image: none;" title="image" src="https://www.moh10ly.com/wp-content/uploads/2019/12/image_thumb-9.png" alt="image" width="860" height="491" border="0"></a></p><p>The property &ldquo;DisplayName&rdquo; with value &ldquo;User LastName&rdquo; is invalid. The value can&rsquo;t contain leading or trailing whitespace.</p><h3>Solution: (For a single user)</h3><p>To resolve the problem, I am going to remove the trailing space in the end of the display name. You can safely use the below Powershell script to solve this problem however, if you don&rsquo;t trust yourself or you&rsquo;re not familiar much with Powershell, You can try it on a lab or a single test user for instance.</p><p>Get-Mailbox -Identity USER | Foreach { Set-Mailbox -Identity $_.Identity -DisplayName $_.DisplayName.Trim() }</p><p><a href="https://www.moh10ly.com/wp-content/uploads/2019/12/image-10.png"><img style="margin: 0px; display: inline; background-image: none;" title="image" src="https://www.moh10ly.com/wp-content/uploads/2019/12/image_thumb-10.png" alt="image" width="816" height="137" border="0"></a></p><h3>Solution: (For all users)</h3><p>Get-Mailbox | Foreach { Set-Mailbox -Identity $_.Identity -DisplayName $_.DisplayName.Trim() }</p><p><a href="https://www.moh10ly.com/wp-content/uploads/2019/12/clip_image001-3.png"><img style="margin: 0px; display: inline; background-image: none;" title="clip_image001" src="https://www.moh10ly.com/wp-content/uploads/2019/12/clip_image001_thumb-3.png" alt="clip_image001" width="826" height="55" border="0"></a></p><h3>Some relevant errors you might encounter as you&rsquo;re moving users to Exchange 2019</h3><p>Error code: -2146233088</p><p>Connection to the Content Transformation Service has failed.</p><p>Context:</p><p>&mdash;&mdash;&ndash;</p><p>Operation: IMapiFxProxy.ProcessRequest</p><p>OpCode: TransferBuffer</p><p>DataLength: 31680</p><p>&mdash;&mdash;&ndash;</p><p>Operation: IMapiFxProxy.ProcessRequest</p><p>Operation: IMapiFxProxy.ProcessRequest</p><p>OperationSide: Target</p><p>eecb073e-e694-4bbc-8652-54dc05a351ea (Primary)</p><p>OpCode: TransferBuffer</p><p>DataLength: 31680</p><p>&mdash;&mdash;&ndash;</p><p>Operation: IMailbox.ExportMessages</p><p>Operation: IMailbox.ExportMessages</p><p>OperationSide: Source</p><p>eecb073e-e694-4bbc-8652-54dc05a351ea (Primary)</p><p>Flags: SkipItemValidation</p><p>PropTags: (null)</p><p>&mdash;&mdash;&ndash;</p><div> 
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 </div><p>>;>;>;>; Scheduled WorkItems: EnumerateFolderMessages(P:14014,R:0,S:0,C:13); EnumerateFolderMessages(P:14029,R:0,S:0,C:15,Cnt=2); WriteFolderMessages(P:1,R:0,S:0,C:132); EnumerateFolderMessages(P:14192,R:0,S:0,C:17); WriteFolderMessages(P:1,R:0,S:0,C:48); EnumerateFolderMessages(P:14259,R:0,S:0,C:12,Cnt=4); EnumerateFolderMessages(P:14320,R:0,S:1,C:15); EnumerateFolderMessages(P:14337,R:0,S:0,C:20); WriteFolderMessages(P:2,R:0,S:0,C:126); EnumerateFolderMessages(P:14485,R:0,S:0,C:30)</p></div>

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