Hi there Naveen Katoch
Thanks for using QandA platform
Try checking if thee that the database connection string is correctly configured in the app settings and that the database firewall is configured to allow the app's outbound IPs. For email issues, verify SMTP settings (host, port, and credentials) if using an SMTP server, or check the API key and configuration if using a service like SendGrid. also check the networkimg, if it uses a VNet, to confirm connectivity.
Use the Mnitor to review logs for specific error details, as this lacks info,
If this helps kindly accept the answer thanks much.