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I have the following problem:

By migrating a user from the databese EX2010 to EX2013 via the Exchange Admin Center a second user/duplicate is getting created and the original mailbox/isn't accessible anymore. The mails can still be found by logging in with the duplicate user.

It seems like there is a workaround for that problem for an older Exchange version. https://blogs.msdn.microsoft.com/ashour/2015/08/28/fix-duplication-in-default-folders-kb3031133-kb3069501-kb2991934/

Why is that exact problem still happening with the current version I'm working with (Exchange CU19) and can I somehow solve that without deleting all duplicates after a migration of alls users?

Thank you

Vadata
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  • How did you migrated the users from 2010 to 2013 via New-MoveRequest (see [here](http://www.admin-enclave.com/en/articles/exchange/302-move-exchange-2010-2013-user-to-exchange-2016.html)) via an cooexistence environment between Exchange 2010 and 2013 (see [here](http://www.admin-enclave.com/en/articles/exchange/206-migrate-from-exchange-2010-to-exchange-2016.html))? – BastianW Mar 20 '18 at 14:30
  • The first link already helped me. I used the Exchange PowerShell for the migration instead of the web interface and migration batches. Thanks! – Vadata Mar 21 '18 at 10:19
  • great, i added that as an possible answer so we can close the question then once you can accept the answer (might be possible after 24h). – BastianW Mar 21 '18 at 12:05

1 Answers1

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As discussed in the comments, try to use the

New-MoveRequest

as explained for example here.

BastianW
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