DPM 2022 - MARS agent failing to register with vault - "encryption passphrase provided is incorrect"

Question

DPM 2022 - MARS agent failing to register with vault - "encryption passphrase provided is incorrect"

occasionallydennis 56

We have stood up a new DPM 2022 server side by side with an old DPM 2019 server that was protecting a VM that had online backups enabled to Azure's recovery services vault. Protection of the VM has been removed on the old server, and the added on the new server. When we attempt to register the existing vault with the new DPM server in order to re-enable online protection of the VM, we're met with the following error:

"encryption passphrase provided is incorrect"

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The passphrase used is the same that was/is being used with the old DPM 2019 server. I have also re-run the Configure wizard on the old server to confirm and it successfully completes validation of the passphrase.

This is a little concerning because if we were in a scenario where we needed to recover from the vault using a new DPM server, this error would be a blocker of course. Has anyone seen this before?

Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-08T06:29:34.8766667+00:00

@occasionallydennis Checking in to see if the above answer helped. If yes, please do "Accept Answer" and Up-Vote it. Let us know if there are still any additional issues we can help with.
XinGuo-MSFT 22,271 Reputation points

2023-05-10T02:06:25.94+00:00

Customers can only accept answer as answer, and I helped you convert the comment to answer.
Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-11T14:16:50.3333333+00:00

XinGuo-MSFT Sorry I did not get what you meant.
Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-12T17:09:13.34+00:00

@occasionallydennis We haven't heard back from you. Please reply if you have any questions in this matter and we will gladly continue the discussion.

Answer accepted by question author

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Your answer

Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-08T06:29:34.8766667+00:00

@occasionallydennis Checking in to see if the above answer helped. If yes, please do "Accept Answer" and Up-Vote it. Let us know if there are still any additional issues we can help with.
XinGuo-MSFT 22,271 Reputation points

2023-05-10T02:06:25.94+00:00

Customers can only accept answer as answer, and I helped you convert the comment to answer.
Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-11T14:16:50.3333333+00:00

XinGuo-MSFT Sorry I did not get what you meant.
Sadiqh Ahmed 49,656 Reputation points Microsoft External Staff Moderator

2023-05-12T17:09:13.34+00:00

@occasionallydennis We haven't heard back from you. Please reply if you have any questions in this matter and we will gladly continue the discussion.

Answer 1

Hi @occasionallydennis Thank you for reaching out to us on Microsoft Q&A platform. Happy to assist!

If you are receiving an error message that the encryption passphrase provided is incorrect while trying to register the MARS agent with the vault, it could be due to a few reasons. One possibility is that the passphrase you are entering is incorrect. Another possibility is that the passphrase has been changed since the last time the server was registered with the vault**.**

To resolve this issue, you can try regenerating the passphrase by following these steps**.**

From the MARS agent console, go to Actions Pane > Change properties >Then go to Encryption tab.
Select Change Passphrase checkbox.
Enter a new passphrase or select Generate Passphrase
Select Browse to save the new passphrase.
Select OK to apply changes.

If the Security Feature is enabled on the Azure portal for the Recovery Services vault, then you'll be prompted to enter the Security PIN. To receive the PIN, follow the steps listed in this article: https://docs.microsoft.com/en-us/azure/backup/backup-azure-security-feature#authentication-to-perform-critical-operations**.**

After regenerating the passphrase, try registering the server with the vault again using the new passphrase. If you continue to experience issues, please let me know and we can explore other troubleshooting steps.

If the response helped, do "Accept Answer" and up-vote it