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Vault registration fails with "already registered" error in Azure Site Recovery

Symptoms
The Microsoft Azure Site Recovery Registration Wizard may fail on the Vault Settings page, and you receive an error message that resembles the following:
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Microsoft Azure Site Recovery Provider Setup
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The DRA server is already registered in vault . Either select the registration key associated with this vault, or unregister the server from and then register it with a different vault.
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OK
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Note the space after the word "vault." In some cases, you may see the name of a previously registered vault. For example, you may see the following: 
The DRA server is already registered in vault contosovault01.
Cause
This error may occur if you are reinstalling the Azure Site Recovery (ASR) provider and agent on a Hyper-V server that was previously registered to another vault.
Resolution
To fix this error and enable the ASR Provider and agent setup to complete successfully, follow these steps:
  1. Cancel the current installation.
  2. Make a backup of the following registry key:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Azure Site Recovery
  3. Delete the registry key that you backed up in step 2.
  4. Restart the Provider and agent setup.
#ASR #ASRS azure recovery services azure site recovery hyper-v hyperv
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.
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Article ID: 3093574 - Last Review: 09/18/2015 15:02:00 - Revision: 2.0

Microsoft Azure Recovery Services

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