My Web App pharmunion is working suddenly stops responding using public DNS name: p-h-u.com

@Alexey Yefremenko welcome to the Microsoft Q&A community.

It looks like your Azure Web App's IP address changed, which can happen due to Azure's infrastructure updates or changes in your App Service plan. When this happens, SSL certificates may also be affected, especially if they were bound to the previous IP address.

Why did your Web App change its IP and remove the SSL certificate?

• Azure periodically updates IP addresses for Web Apps, especially if you're using IP-based SSL bindings.

If your SSL certificate was bound to the old IP, it may have been released when the IP changed.

DNS records may still point to the old IP, causing connectivity issues.

How to recover access to your web page?

Check your new IP address in the Azure portal:

Go to App Services → Select pharmunion → Click Properties → Find the Virtual IP address.

Update your DNS A record to point to the new IP address (13.67.129.26).

Rebind your SSL certificate:

  Go to **App Services** → Select **pharmunion** → Click **Custom domains** → Update the binding.
  
     First, change it to **SNI SSL**, then back to **IP-based SSL** to get a new IP.
     
     **Verify SSL certificate settings** in Azure and ensure it's correctly assigned.
     

Should you update the DNS A record?

Yes, if your ___domain p-h-u.com is using an A record, you need to update it to the new IP address (13.67.129.26). Alternatively, consider using a CNAME record pointing to pharmunion.azurewebsites.net, which avoids manual IP updates.

I hope these helps. Let me know if you have any further questions or need additional assistance.

Also if these answers your query, do click the "Upvote" and click "Accept the answer" of which might be beneficial to other community members reading this thread.