如何解决MS Office 365（V5）设置问题（添加组织）的Veeam备份？

Question

大约6个月前，我成功地为Microsoft Office 365设置了Veeam备份的试用版（自从更名为Microsoft 365的Veeam Backup，具有新的主要版本，并且是CPU要求的两倍）。

客户端仍然需要具有V5版本（由于他们的服务器缺少所需的8个内核来支持新的V6版本）。

我现在正在尝试再次设置该软件，而我正在大门跌跌撞撞。当我尝试“添加组织”时，使用相同的（Office 365）Global Admin用户连接到M365组织，我用来创建原始测试，以及用于身份验证（基本）等相同的设置选择。现在返回：

2022-05-11 8:57:13 PM :: Connect to Microsoft Graph: unknown_user_type: Unknown User Type
2022-05-11 8:57:13 PM :: Connect to EWS: The request failed with HTTP status 401: . :: 0:00:03
2022-05-11 8:57:17 PM :: Connect to SharePoint: unknown_user_type: Unknown User Type
2022-05-11 8:57:18 PM :: Connect to PowerShell: Connecting to remote server outlook.office365.com failed with the following error message : Access is denied. :: 0:00:03

我发现这是设置一个专用用户的Veeam备份的好时机，因此我现在拥有一个新的全球管理员，其角色和权限与原始的和Office的基本许可证完全相同。与此用户建立连接（

2022-05-11 9:00:53 PM :: Connect to EWS: The request failed with HTTP status 401: .
2022-05-11 9:00:56 PM :: Connect to PowerShell: Connecting to remote server outlook.office365.com failed with the following error message : Access is denied. :: 0:00:08

我无法在Veeam社区网站上找到故障排除信息的方式（我正在尝试使用社区版本，我在12月下载了）。我无法使用Veeam开设支持票，因为这需要申请中的许可证信息，而且销售人员无法为我生成第二个V5试用许可证。

因此 - 任何指导/想法都欢迎。

我已经审查了文档中的所有先决条件（无论如何，我所知道的任何东西都在服务器上发生了变化）。我使用新的VBO@...凭据重复了我的设置注释中的所有PowerShell步骤。

我可以成功登录到 https://office.microsoft.com 与新用户一起发送和发送和接收电子邮件，在SharePoint中工作，从GUI中管理所有应用程序，依此类推。

使用 Microsoft Connectivity Tester 但是，导致失败。这是服务帐户访问（开发人员）测试：


Exchange Web Services service account access verification
The Microsoft Connectivity Analyzer failed to complete all tests with the service account.
Test Steps

The Microsoft Connectivity Analyzer is attempting to test Autodiscover for [email protected].
Autodiscover was tested successfully.

Attempting to resolve the host name outlook.office365.com in DNS.
The host name resolved successfully.

Testing TCP port 443 on host outlook.office365.com to ensure it's listening and open.
The port was opened successfully.

Testing the SSL certificate to make sure it's valid.
The certificate passed all validation requirements.

A new mail item is being created.
The attempt to create a mail item failed.

Additional Details
Exception details:
Message: The request failed. The remote server returned an error: (401) Unauthorized.
Type: Microsoft.Exchange.WebServices.Data.ServiceRequestException
Stack trace:
   at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request)
   at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.ValidateAndEmitRequest(IEwsHttpWebRequest& request)
   at Microsoft.Exchange.WebServices.Data.MultiResponseServiceRequest`1.Execute()
   at Microsoft.Exchange.WebServices.Data.ExchangeService.InternalCreateItems(IEnumerable`1 items, FolderId parentFolderId, Nullable`1 messageDisposition, Nullable`1 sendInvitationsMode, ServiceErrorHandling errorHandling)
   at Microsoft.Exchange.WebServices.Data.Item.InternalCreate(FolderId parentFolderId, Nullable`1 messageDisposition, Nullable`1 sendInvitationsMode)
   at Microsoft.Exchange.WebServices.Data.Item.Save(FolderId parentFolderId)
   at Microsoft.M365.RCA.ConnectivityTests.CreateItemTest.PerformTestReally()

Exception details:
Message: The remote server returned an error: (401) Unauthorized.
Type: System.Net.WebException
Stack trace:
   at System.Net.HttpWebRequest.GetResponse()
   at Microsoft.Exchange.WebServices.Data.EwsHttpWebRequest.Microsoft.Exchange.WebServices.Data.IEwsHttpWebRequest.GetResponse()
   at Microsoft.Exchange.WebServices.Data.ServiceRequestBase.GetEwsHttpWebResponse(IEwsHttpWebRequest request)