Exchange Online administration : Important Update to the Get-FederationInformation PowerShell Cmdlet

Hi All,

Greetings for the day!!!

Today I am sharing important update related to Exchange Online PowerShell CMLDLET – Get-FederationInformation

Update: Change in behaviour of the Get-FederationInformation cmdlet in Exchange Online. This change limits the scope of domain data returned by the cmdlet.

Details

Before Update / Current behavior :

• Previously, the Get-FederationInformation cmdlet returned all federated domain information in the DomainNames field
• Currently, the Get-FederationInformation cmdlet allows any user to retrieve federation information for a specified domain without requiring authentication.
• This includes details such as ‘DomainNames’, which returns a list of all accepted domains for the target tenant.

After Update:

• After this update, the cmdlet will only return domain information that is explicitly passed as a parameter.
• Going forward, the “DomainNames” field will no longer return all federated domain information.
• Instead, it will only include the domain information that is passed as the parameter.

• This change may impact scripts or tools that rely on retrieving all federated domains by default.
• There is no change to the cmdlet’s availability or core functionality—only the scope of data returned is affected.
• This change is designed to enhance the security of tenant information. It limits the exposure of domain names to unauthorized users.

Actions we need to do

• Review any automation, scripts, or tools that use the Get-FederationInformation cmdlet.
• Ensure they explicitly pass the required domain(s) as parameters.
• Communicate this change to our Exchange Online administrators and support teams to avoid confusion or unexpected results.

REFERENCES

• Important Update to the Get-FederationInformation Cmdlet in Exchange Online – https://techcommunity.microsoft.com/blog/exchange/important-update-to-the-get-federationinformation-cmdlet-in-exchange-online/4410095

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HAVE a FANTASTIC LEARNING AHEAD!!! LIFE IS BEAUTIFUL 🙂