Error HCW8064 during EXCH19 Hybrid configuration despite successful oAuth tests

Question

I reran the HCW to update the certificate and servers for send/receive connectors from EXCH13 to EXCH19. However, I got error HCW8064 stating that the OAuth portion of my Hybrid configuration could not be performed. I ran a Test-oAuthConnectivity and it succeeded for both On-Premise and Cloud. I'm not sure what else to check. Below is part of the HCW log that might be related:

2023.11.07 16:03:16.170 *ERROR* 10203 [Client=UX, Page=Configuring, fn=RunWorkflow, Thread=13] 
                                      System.NotImplementedException: The method or operation is not implemented.
                                         at Microsoft.Online.CSE.Hybrid.Common.MSALAuthProvider.Result.Microsoft.Online.CSE.Hybrid.Common.Abstract.IAuthenticationResult.get_RefreshToken()
                                         at Microsoft.Online.CSE.Hybrid.Common.BaseAuthCredential.GetAuthenticationResultFromCache(String authority, String resource, String clientId)
                                         at Microsoft.Online.CSE.Hybrid.Common.BaseAuthCredential.AcquireToken(String authority, String resource, String clientId, Uri redirectUri, Boolean promptMode)
                                         at Microsoft.Online.CSE.Hybrid.Provider.AdminApi.AdminApiProvider.Connect()
                                         at Microsoft.Online.CSE.Hybrid.Host.Environment.CreateSession[T](ILogger logger, IPowerShellLogger psiLogger, ICredential credential, String powerShellHost)
                                         at Microsoft.Online.CSE.Hybrid.App.AppData.CreateTenantSession()
                                         at Microsoft.Online.CSE.Hybrid.App.AppData.RunWorkflow(ILogger logger, WorkflowType workflowType, IEngineUserInterface userInterface, Boolean postSessionData)
2023.11.07 16:03:29.855         10044 [Client=UX, Thread=1] Opening C:\Users\xxxxx\AppData\Roaming\Microsoft\Exchange Hybrid Configuration
2023.11.07 16:05:04.826 *ERROR* 10252 [Client=UX, Thread=1] 
                                      System.ArgumentOutOfRangeException: The UTC time represented when the offset is applied must be between year 0 and 10,000.
                                      Parameter name: offset
                                         at System.DateTimeOffset.ValidateDate(DateTime dateTime, TimeSpan offset)
                                         at System.DateTimeOffset..ctor(DateTime dateTime)
                                         at Microsoft.Online.CSE.Hybrid.App.ViewModel.Dialogs.SupportPackage.UpdatePackage()

2023.11.07 16:07:27.030 *ERROR* 10294 [Client=UX, Activity=Tenant Connection Validation, Thread=13] 
                                      System.NotImplementedException: The method or operation is not implemented.
                                         at Microsoft.Online.CSE.Hybrid.Common.MSALAuthProvider.Result.Microsoft.Online.CSE.Hybrid.Common.Abstract.IAuthenticationResult.get_RefreshToken()
                                         at Microsoft.Online.CSE.Hybrid.Common.BaseAuthCredential.GetAuthenticationResultFromCache(String authority, String resource, String clientId)
                                         at Microsoft.Online.CSE.Hybrid.Common.BaseAuthCredential.AcquireToken(String authority, String resource, String clientId, Uri redirectUri, Boolean promptMode)
                                         at Microsoft.Online.CSE.Hybrid.Provider.PowerShell.PowerShellProvider.ConnectionInfo.BuildTenantConnectionInfo(ILogger logger, String authenticationContextAuthorityUrl, String acquireTokenClientId, Uri connectionUri, String shellUri, ICredential credential, String& authorizationHeader, Boolean rpsOAuth, Uri acquireTokenRedirectUrl)
2023.11.07 16:07:27.031 *ERROR* 10085 [Client=UX, Activity=Tenant Connection Validation, Thread=13] The method or operation is not implemented.

Thanks for your help.

Answer 1

@Louis CI Lo ,

Welcome to our Q&A forum.

Regarding the error HCW8064, please re-download 365 Hybrid Configuration Wizard to make sure you are using the latest version.

Before manually configuring OAuth authentication, there are two points must be paid attention to:

1. Make sure you are using the administrator account which is a member of Organization Management role group.
2. Double-check and confirm that the domain used in AuthMetadataUrl is verified successfully and it's used as the primary SMTP domain for the cloud-based email accounts.

Besides, I have found an tech article describes more steps about how to troubleshoot HCW:

https://techcommunity.microsoft.com/t5/exchange-team-blog/modern-hcw-hybrid-agent-troubleshooting-like-a-pro/ba-p/1558725

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