Not able to preview app in Microsoft Teams created using Developer portal

Renuka Mane 26 Reputation points

Have to test chat bot in MS Teams which is hosted on Azure cloud(Azure bot Service).

Enabled MS Teams channel for Azure Bot.

Tried testing this bot in MS Teams by configuring it manually using Developer portal.

After app creation, when clicked on "Preview in Teams" got error for "Custom app installation is disabled". When tried several times it is showing message "Your app has been successfully sideloaded" but can't see this app in chat as well as in apps.
Let us know where we can see these apps created using developer portal also if we will need any permissions for this.

Microsoft Teams Development
Microsoft Teams Development
Microsoft Teams: A Microsoft customizable chat-based workspace.Development: The process of researching, productizing, and refining new or existing technologies.
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