why device name with $ showing in azure entra

Question

why device name with $ showing in azure entra

Answer 1

@SKG

Thank you for your post!

I found a detailed article about why this is occurring, and I'll share a summarized answer below to hopefully help point you in the right direction and resolve your issue.

For more details:

• The Mysterious Case of the $ (a.k.a. Dollar Sign) Character in Hybrid Azure AD Joined Devices

When it comes to your Device name showing the $ symbol, the author was able to reproduce the issue by renaming their computer(s) within Active Directory (On-prem).

• The author then notes that after a couple hours, the issue was "fixed" by itself.

....So far so good – names match, then we renamed it through the system properties within the Operating System from PFEWIN10 to NEW-PFEWIN10, waited for the next sync cycle and there it was, in Azure AD the computer’s display name was:  NEW-PFEWIN10$ while in the Computer Name in the OS settings was without the “$”.

Looking into the Azure AD Connect Rules for Device Synchronization and looking at the Devices Rule, the author found that the

• "...rule logic is basically the culprit of having $ in the end of all devices that have been renamed."

So when a computer is first joined to the domain , the displayname attribute in AD is usually <Not Set>  , hence in Azure AD , the device’s display name is populated with the value of the CN attribute (as the rules mandates), this will not change until the actual displayname on-premises is populated on certain events.. like renaming a computer.     

In Active Directory Domain Services when a computer is renamed,  the displayname  attribute is then populated with the name of the computer and appends a $ to the end (this is on-prem AD by design), since now ***displayname ***attribute is not NULL , AAD connect uses displayname on-prem instead of CN  to populate the display name value in the AAD object…

I hope this helps!

If you have any other questions, please let me know. Thank you for your time and patience throughout this issue.

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