Microsoft Model Driven App's Play Button is Disabled?

Recently when I was working on a Model Driven app, I observed that the App's Play button was disabled in the Power Apps Maker Portal.

Later, I realized that I had added some features to the App and Saved the Model Driven App but not Published.

Click on Publish to Publish the App.

Then, I was able to see the My App's Play button in the Power Apps Maker Portal.

Hope you have followed all the steps and resolved this issue.

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