If you want to use Microsoft Office 365 in combination with the Groupware app, you should specify that the Groupware app be authenticated with OAuth 2.0. This method of authentication is recommended by Microsoft.
To use authentication with OAuth 2.0, you must first adjust the configuration in Azure Active Directory. Then, adjust the settings in the Groupware app as required.
You must perform the following preparatory tasks for authentication with OAuth 2.0 in Azure Active Directory:
Registering the Groupware app in Azure Active Directory: Create a new app registration for the Groupware app. Select Accounts in this organizational directory only as the supported account types. Enter the base address of the d.3one system environment as a redirect URI.
Configuring the API permissions: Add the following permission for the API permissions: Use Exchange Web Services with full access to all mailboxes (full_access_as_app)
Creating a client secret: Create a new client secret. Copy the secret directly to the clipboard to paste the secret in the Groupware app afterward.
Determining the application ID and the directory ID: Copy the IDs from the app registration overview of the Groupware app to the clipboard to paste them to the Groupware app later.
Additionally, create an access policy for the Groupware app in Microsoft 365. For more information, see the following article in our knowledge base: https://kb.d-velop.de/s/article/000001683
You then need to adjust the corresponding settings in the Groupware app for authentication with OAuth 2.0.