Issues with Managing Aliases in O365 Hybrid AD Setup

Deepu K 20

In my O365 users -> Manage username and email, I am unable to add Aliases or see previously created Aliases in my mail account. My O365 is Hybrid AD joined with Azure and displays the information: "This user is synchronized with your local Active Directory. Some details can be edited only through your local Active Directory."
I have some queries regarding this setup:

Why were all of my aliases deleted after the Hybrid AD Sync?
How can I recreate those aliases with my current Hybrid setup?
How can I prevent the deletion of aliases for those AAD sync user accounts?

3 answers

Noah Ma-MSFT 2,340 Reputation points Microsoft Vendor

2024-07-19T08:21:02.6533333+00:00

Hi @Deepu K,

Thank you for posting to Microsoft Community.

Based on your description, I understand you want to add the aliases in your Hybrid environment with Azure AD Connect.

For this you could use AD User and Computer (ADUC), find the user, double click -> attribute editor -> find "proxyAddresses" and add the address. Add to the on-prem object via ADUC and it will sync via AADConnect within 30 minutes.

However, please kindly note Microsoft do not support AADConnect syncing to 365 not having at least one Exchange Server on-prem for management.

If my answer is helpful to you, please mark it as the answer so that other users can refer to it. Thank you for your support and understanding.
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Deepu K 20 Reputation points

2024-07-19T12:54:59.6+00:00

Dear @Noah Ma-MSFT

Dear Thank you for your suggestion regarding the use of AD User and Computer (ADUC) to update aliases. I have followed these steps:

ADUC Steps

Opened AD User and Computer (ADUC).

Located the user and double-clicked on the user object.

Navigated to the attribute editor.

Found the "proxyAddresses" attribute and added the required addresses.

Sync with AADConnect

Performed a synchronization with AADConnect.

Despite following these steps, the aliases did not update as required.

I would appreciate it if you could provide any PowerShell commands that might help fix this issue.

Thank you for your assistance.

Deepu K 20 Reputation points

2024-07-19T12:56:58.72+00:00

Dear
Thank you for your suggestion regarding the use of AD User and Computer (ADUC) to update aliases. I have followed these steps:

ADUC Steps

Opened AD User and Computer (ADUC).

Located the user and double-clicked on the user object.

Navigated to the attribute editor.

Found the "proxyAddresses" attribute and added the required addresses.

Sync with AADConnect

Performed a synchronization with AADConnect.

Despite following these steps, the aliases did not update as required.

I would appreciate it if you could provide any PowerShell commands that might help fix this issue.

Thank you for your assistance.

Deepu K 20 Reputation points

2024-07-19T13:03:15.52+00:00

Dear @Noah Ma-MSFT

Thank you for your suggestion regarding the use of AD User and Computer (ADUC) to update aliases. I have followed these steps:

ADUC Steps

Opened AD User and Computer (ADUC).

Located the user and double-clicked on the user object.

Navigated to the attribute editor.

Found the "proxyAddresses" attribute and added the required addresses.

Sync with AADConnect

Performed a synchronization with AADConnect.

Despite following these steps, the aliases did not update as required.

I would appreciate it if you could provide any PowerShell commands that might help fix this issue.

Thank you for your assistance.

Deepu K 20 Reputation points

2024-07-22T05:53:29.95+00:00

Dear @Noah Ma-MSFT
I followed these steps, unfortunately the aliases did not update as required.

Noah Ma-MSFT 2,340 Reputation points Microsoft Vendor

2024-07-22T06:57:23.13+00:00

Hi @Deepu K,

According to your needs, you could try the command below to see if it could add a new alias of user in AD successfully via PowerShell.

Set-ADUser XXX -add @{ProxyAddresses="smtp:xxx.onmicrosoft.com"}

Deepu K 20 Reputation points

2024-07-23T05:55:08.8133333+00:00

Dear @Noah Ma-MSFT
Thank you for your suggestion regarding the use of the PowerShell command to add a new email alias to a user in Active Directory.
I attempted to execute the command as provided, but unfortunately, it did not work. It appears that there are additional prerequisites and features that need to be installed and configured for this command to function correctly. Specifically, the following steps are necessary:

Install Remote Server Administration Tools (RSAT):

Import the Active Directory Module:

Verify the Module Installation:

Verify User Identity and Ensure Proper Permissions:
Let me know if I am wrong here for the above steps mentioned.

Noah Ma-MSFT 2,340 Reputation points Microsoft Vendor

2024-07-24T01:18:58.5633333+00:00

Hi,

Thanks for the update. As you mentioned, could you offer the error message or screenshot when you run the command for the further assistance.

Deepu K 20 Reputation points

2024-07-24T05:45:19.3666667+00:00

Dear @Noah Ma-MSFT
Thank you for your update.

As requested, I have attached the error message screenshot that appeared when I ran the PowerShell command:
Set-ADUser XXX -add @{ProxyAddresses="smtp:xxx.onmicrosoft.com"}

The message states:

*Set-ADUser : Cannot find an object with identity: 'deepu.k@ensurity.com' under: 'DC=ensurity,DC=com'.
*
I hope this provides the necessary information for further assistance. Please let me know if you need any additional details or have further instructions.

Thank you for your support.

Best regards,

Noah Ma-MSFT 2,340 Reputation points Microsoft Vendor

2024-07-24T06:27:09.9266667+00:00

Hi,

Thanks for the information,

Please kindly check if the address match in AD since the error message prompt the object cannot be found.

Also, you could try another way to run the command as below.

$user = "username@domain.com" # Replace with the user's UPN or DistinguishedName

$newAlias = "smtp:alias@domain.com" # Replace with the new alias

$userDetails = Get-ADUser -Identity $user -Properties proxyAddresses # Retrieve the current proxyAddresses

$currentProxyAddresses = $userDetails.proxyAddresses # Add the new alias to the existing proxyAddresses array

$currentProxyAddresses += $newAlias

Set-ADUser -Identity $user -Replace @{proxyAddresses=$currentProxyAddresses} # Update the user with the new proxyAddresses

Then, you could make a sync to Azure AD after change.

Hope it helps.

Deepu K 20 Reputation points

2024-07-24T06:50:11.45+00:00

@Noah Ma-MSFT
Dear Noah,
Thank you for the quick support , I will try these steps and let you know the status asap.
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Deepu K 20 Reputation points

2024-07-23T13:44:09.0866667+00:00

Dear @Noah Ma-MSFT
Thank you for your suggestion. I tried using the PowerShell command mentioned:
***Set-ADUser XXX -add @{ProxyAddresses="smtp:xxx.onmicrosoft.com"}***Additionally, I attempted the following prerequisites:

Installed Remote Server Administration Tools (RSAT)

Imported the Active Directory Module

Verified the Module Installation

Verified User Identity and Ensured Proper Permissions

Despite these efforts, I was unable to get the command to work successfully. Please let me know if you have any further suggestions or additional PowerShell steps to make the command work.

Thank you.

Best regards,
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Deepu K 20 Reputation points

2024-07-24T05:48:11.1133333+00:00

Dear @Noah Ma-MSFT
Thank you for your update.

As requested, I have attached the error message screenshot that appeared when I ran the PowerShell command:
Set-ADUser XXX -add @{ProxyAddresses="smtp:xxx.onmicrosoft.com"}

The error message states:

**Set-ADUser : Cannot find an object with identity: 'deepu.k@ensurity.com' under: 'DC=ensurity,DC=com'. **

I hope this provides the necessary information for further assistance. Please let me know if you need any additional details or have further instructions.

Thank you for your support.

Best regards,
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Issues with Managing Aliases in O365 Hybrid AD Setup

3 answers