I had an Azure Website that was setup and was using PHP and WordPress. I wanted to use the same name for a site that would be running node and deployed from github, so I deleted the first site and recreated it with my new information.
Now when I try to run azure site log tail mysite, I get back html that basically says 401 - Unauthorized: Access is denied due to invalid credentials..
I have other Azure Websites running under this same account/subscription that work fine and I can see my console.log messages when running tail. I even have one that is deployed from the same github repo/branch, so the code isn't any different.
The only difference is that another person setup the site when it was the PHP site. But I used my account when deleting and recreating.
Thanks.
Since the website was created by another person, I suggest you reset its credentials.