Unable to web deploy to Linux App Service from Visual Studio 2019

Question

For about 2 weeks now I am unable to web deploy from Visual Studio 2019 16.9.6. I have an ASP.NET Core 3.1 MVC application that I am trying to web deploy to a Linux App Service on Azure. When I try to publish I get the following errors:

Publish has encountered an error.
Build failed. Check the Output window for more details.

A diagnostic log has been written to the following location:
"C:\Users\ken\AppData\Local\Temp\tmpF3BF.tmp"

An error occurred when the request was processed on the remote computer.
The server experienced an issue processing the request. Contact the server administrator for more information.

Prior to two weeks ago I had no issues. The following is a list of items I have tried:

• Stopped and started the app service
• Stopped the app service and tried deploying while it was stopped
• Reset the publish profile and re-imported it into Visual Studio

If I edit the publish profile and click "Validate Connection" it fails and gives the same error message as above:

An error occurred when the request was processed on the remote computer.
The server experienced an issue processing the request. Contact the server administrator for more information.

I am able to publish locally and use an FTPS client to connect to the app service and manually deploy the files.

Answer 1

I deleted the current publish profile and instead of downloading it from the Azure portal I used the new publish profile wizard built into Visual to create the publish profile. Once I did that everything started to deploy with no issues. I looked at what the difference is and it seems the publish profile I downloaded from Azure was missing an XML element called "IsLinux".