Our company has multiple projects, and uses code reviews in most of them. However in one decades-old project we get the following message: "This feature can't be used until your Azure DevOps administrator has enabled it on the team project."
In Visual Studio / Team Explorer / Pending Actions, I drop down the list of Actions, and select 'Request Review' to get the above message.
We can't find the setting to enable code reviews, and google can't find any mentions of the error message.
We're still using Team Foundation version control, not Git. We are on "Azure DevOps Server 2020 Update 1"
The closest match I've found on the web is this but it's not quite the same, and I'm reluctant to poke around with the templates without understanding them. It is quite possible that this project has been imported from our old Source Safe system some time ago though, the history is murky.