Hello, @Ex DrEAMeR !
Adding to what @Stanislav Zhelyazkov has said, you can always check the official offer details and legal documentation for the latest and most up to date information when it comes to whether or not you can mine cryptocurrency on Azure:
- All Offer Details | Pay-as-you-go Details
- Azure Legal Information
- Acceptable Use Policy (you'll need to scroll down a bit)
In almost all cases, you will spend decisively more than you are able to make mining which is a strong indication of fraudulent activity (attempting to use unauthorized payment, etc.) so it's not recommend as @Stanislav Zhelyazkov pointed out.
In free offers, you'll see cryptocurrency mining explicitly prohibited: