Looks like it isn't. Something here may help.
https://learn.microsoft.com/en-us/azure/devops/server/requirements?view=azure-devops-2020
They're actively answering TFS questions in dedicated DeveloperCommunity forums here.
https://developercommunity.visualstudio.com/spaces/22/index.html
--please don't forget to Accept as answer if the reply is helpful--