Hello,
If you are getting this error while deploying your site via WebMatrix, follow these steps to fix this.
ERROR:
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Connection Error - Could not connect to the remote computer ("XXX.XXX.XXX.XXX"). On the remote computer, make sure that Web Deploy is installed and that the required process ("Web Management Service") is started. Learn more at:
http://go.microsoft.com/fwlink/?LinkId=221672#ERROR_DESTINATION_NOT_REACHABLE.
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Fixed: Make sure “Management Service” is running in your server. You can restart it from the IIS > Management > Management Service. Once you have restarted this service, try to access it again, you will be able to access deploy your site without any issue.
Now, you will be able to access and deploy your site without any issue.
Thank you,