Cannot add accounts on domain joined client PC

[RiP]

In emClient V9 and also in Beta V 10.0.1495 I cannot add accounts when the client computer is member of an Windows AD domain and the mailbox is hosted by an Exchange Server not member of the clients domain.
Automatic setup and manual setup does the same thing: It uses the Windows account credentials to log on on the Exchange Server instead the credentials provided by me.
I can see the wrong username in the Eventlog on the Exchange server.

The only way to get the accounts added and connected so far is:

• Start Windows 10 Sandbox
• Install emClient
• Export account settings to XML (include password)
• Import the XML on emClient on domain joined PC
• Exit (and discard) Windows sandbox

This is not really usable for the average user, I think.

In an old post I read the same problem for connecting to O365 with domain joined PC - there was said, it’s fixed in V9:

Cannot add an Office 365 account when the computer is joined to a domain

Hi, We are migrating to Office 365 accounts in our company and we want to add these accounts to the EM client so that employees can access their mail in the eM Client. However, this can only be done if computers are not joined to a domain. We have tried the same procedure on several computers joined to the domain, but without success - the eM Client opens Teams with a login message, but does not display the Office 365 account login web page. The eM Client tries to log in only through the user …

Is this a still open issue?

Richard