Security is a top priority for Microsoft and our customers, and we continue to work very hard to keep customer data secure from cyber-threats, while ensuring compliance with evolving regulations. As ...
Updated Oct 05, 2022
Version 9.0
Blog Post
14 MIN READ
New security feature in September 2021 Cumulative Update for Exchange Server
Hi,
we tried followings :
Proxy bypass activated
Outgoing Port 80,443 allowed
Root Certificate Checked.
I still get the same error :
Exception encountered while fetching mitigations : System.Exception: This XML is not deemed safe to consume since Response xml's signing cert is invalid or not from microsoft
bei Microsoft.Exchange.Mitigation.Service.Common.SignatureVerifierUtils.ThrowIfIntegrityChecksFail(SafeXmlDocument xmlDoc)
bei Microsoft.Exchange.Mitigation.Service.Common.SignatureVerifierUtils.GetValidatedDocumentWithoutSignature(SafeXmlDocument xmlDoc)
bei Microsoft.Exchange.Mitigation.Service.Common.Utils.FetchDataFromXmlStream[T](Stream stream)
bei Microsoft.Exchange.Mitigation.Service.Common.Utils.FetchMitigationsFromUrl[T](String url, RemoteCertificateValidationCallback certValidationCallback, X509Certificate clientAuthCert, Boolean isResponseJson)
bei Microsoft.Exchange.Mitigation.Service.MitigationCloudServiceV2.FetchMitigations()
bei Microsoft.Exchange.Mitigation.Service.Mitigations.MitigationEngine.FetchAndApplyMitigation()