Error: "Unable to access the federation Metadata document..." after running Set-Federationtrust

Tanisorn Sowudomsilp 231 Reputation points

Hi All,

My customer has the Exchange 2016 hybrid servers coexist with Exchange 2010 servers.

I renewed the Exchange Server OAuth certificate in two weeks ago, but I have not run the Exchange Hybrid Wizard.

Next, I found the Microsoft Delegation Federation certificate will expire in the next week.

So, I have created new Microsoft Delegation Federation certificate, then I found the error message when run the command below,

Set-FederationTrust -Identity "Microsoft Federation Gateway" -Thumbprint <thumprint> -RefreshMetaData

the error message says "Unable to access the federation Metadata document from the federation partner. Detailed information: "The remote server returned an error (426) Upgrade Required."..."

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Please suggest me the solution to resolve the problem.

Thank you very much,


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2 answers

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  1. Jarvis Sun-MSFT 10,091 Reputation points Microsoft Vendor

    Hi @Tanisorn Sowudomsilp

    As per as research, you can try to run PowerShell as Administrator to update the FederationTrust with cmdlet:

    Update-AdfsRelyingPartyTrust -TargetName "trustname" -Metadatafile FederationMetadata.xml.


    If it doesn't work, please run the Exchange Hybrid Wizard and make sure the federation metadata URL is accessible. If there are more error messages, please feel free to let us know.

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  2. Thomas Biland 0 Reputation points

    maybe same issue here:

    [PS] C:\Windows\system32>New-FederationTrust -Name "Microsoft Federation Gateway" -Thumbprint D3AFBE73C02F2E4EF867F596D1B0E1015FD28190
    Auf das Verbundmetadatendokument kann nicht vom Verbundpartner aus zugegriffen werden. Detaillierte Informationen: "Der Remoteserver hat einen Fehler zurückgegeben: (426) Upgrade Required.".
        + CategoryInfo          : MetadataError: (:) [New-FederationTrust], FederationMetadataException
        + FullyQualifiedErrorId : [,RequestId=72dc3afb-058d-4bd4-88dd-f2362b5c1d94,TimeStamp=14.07.2023 08:40:05] [FailureCategory=Cmdlet-FederationMetadataException] E06888A8,Microsoft.Exchange.Ma
        + PSComputerName        :