How to get the original On-Prem AD account into Azure AD & SharePoint Online?

[Mary20_19]

Hello

We have OnPrem AD where our users accounts are i.e.  Domain\ABC123  then, We got Azure AD, ADFS, and O365 where our users now use xxx@domain.com to connect and use SharePoint Online.

However, We now have a requirement in some custom solution in SharePoint Online to get the original On-Prem AD account value - How to do so? I mean, If the logged user is xxx@domain.com, How can I find out what is his original On-Prem AD account value e.g. Domain\xyz987

Is there a way to do so? Or, How can I sync that value into Azure AD or SharePoint Profile?

[#2]

Can’t see why the samaccount name is needed? The users UPN should be set and be the same in AD as in AAD

[#3]

Hi Adam,

My On-Prem AD account is actually  Domain\MaLa23264 and it work perfectly fine with our internal onPrem systems including our old SharePoint 2013 on-Prem farm.

In SharePoint Online, I use the UPN (Mary.Larson@Domain.com), So, They are not the same.

In specific SharePoint solution we are building, I really need to get the original On-Prem AD account which is Domain\MaLa23264 ... How?

[#4 · Accepted solution]

While the SamAccountName is synced to Azure AD, it's NOT exposed in any of the admin centers or other tools. You can only consume it via the Graph: https://social.msdn.microsoft.com/Forums/en-US/e400c1c8-c803-4af1-8a90-0a1ff246f844/samaccountname-a...

[#5]

Ok! AFAIK this must be done programmatically! Powershell can be used as well but I’m not sure that will suit your needs