Learn how to resolve ERROR_DESTINATION_NOT_REACHABLE in Azure. Our Server Management Support team is here to help you with your questions and concerns.
How to Fix ERROR_DESTINATION_NOT_REACHABLE in Azure
Having trouble with the `ERROR_DESTINATION_NOT_REACHABLE` error message?
Well, you are in luck! Today, our Experts will explain the causes behind this error and how to resolve them.
This error signals that the deployment process could not connect to the remote server, preventing our updates from being applied.
The error message generally appears as follows:
[error]Error Code: ERROR_DESTINATION_NOT_REACHABLE
[error]More Information: Could not connect to the remote computer (“”). On the remote computer, make sure that Web Deploy is installed and that the required process (“Web Management Service”) is started.
Impacts of the Error
- The primary impact is that the deployment fails, halting any updates or changes to our application.
- If the error occurs during a scheduled deployment, it may cause unexpected application downtime.
- Developers often spend considerable time diagnosing and resolving the connectivity issues.
Common Causes and Fixes
1. Web Management Service Not Running
The Web Management Service (WMSvc) necessary for Web Deploy may not run on the server.
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- First, use Remote Desktop Protocol (RDP) to connect to your server.
- Then, press `Windows + R`, type `services.msc`, and press `Enter`.
- Next, find “Web Management Service” in the list.
- If its status is “Stopped”, right-click and select “Start”.
- To prevent future issues, right-click WMSvc, go to “Properties”, and set “Startup type” to “Automatic”.
2. Firewall Restrictions
Firewall settings might block incoming connections on port 8172, which is used by Web Deploy.
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- First, go to Control Panel > System and Security > Windows Defender Firewall.
- Then, click “Advanced settings” in the sidebar.
- Now, we have to create an Inbound rule. To do so, click “Inbound Rules” and “New Rule.”
- Then, select “Port” and click “Next”.
- Choose “TCP” and specify port 8172.
- Next, allow the connection and then name the rule.
- If we are using a corporate firewall, we need to contact IT to confirm outgoing connections on port 8172 are allowed.
3. Incorrect Deployment URL
The deployment URL might be incorrectly set up.
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- First, check Azure DevOps pipeline or Visual Studio settings.
- Then, confirm the URL follows this format: `https://.scm.azurewebsites.net/`.
- Now, open it in a browser. If prompted for credentials, the URL is valid but may need authentication.
4. IP Restrictions on Management Service
IP restrictions may block access to the Web Management Service.
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- To begin with, log in to the Azure portal.
- Then, open the App Service instance.
- Under “Networking”, review any IP restrictions.
- If the IP isn’t listed, click “Add IP Address” or update the rules to allow the address.
5. Application Configuration Issues
Misconfigurations in Azure App Service settings can also trigger this error.
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- Go to the App Service in the Azure portal and open “Configuration”.
- Check application settings and connection strings, ensuring they match your app’s requirements.
- If issues persist, we may have to delete and recreate the app using the correct configurations from Azure documentation.
Prevention Strategies
- Set up monitoring for Azure services to catch potential issues early.
- Ensure all team members understand Azure deployment configurations.
- Trial any configuration changes in a staging environment before production.
- Plan updates during low-traffic maintenance windows to reduce downtime impact.
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Conclusion
By identifying the root cause and applying the right fix, we can easily resolve the `ERROR_DESTINATION_NOT_REACHABLE` issue and ensure smoother Azure deployments.
In brief, our Support Experts demonstrated how to resolve ERROR_DESTINATION_NOT_REACHABLE in Azure.
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