@Ramachandran m - Welcome to Microsoft Q&A and thanks for reaching out to us.
If you're having trouble receiving a code on your mobile device for Azure login, there are a few things you can try:
- Check your mobile device's settings to make sure push notifications are enabled for the Microsoft Authenticator app.
- Make sure the phone number associated with your account is up to date and correct.
- Try uninstalling and reinstalling the Microsoft Authenticator app.
Hope this helps. and please feel free to reach out if you have any further questions.
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