Some months ago, I wrote an MVVM-Template for Visual Studio 2019. It worked fine, I placed it into %USERPROFILE%\Documents\Visual Studio 2019\Templates\ProjectTemplates and worked with it for a while.
Now I needed to reset my PC and so I downloaded VS19 again. I stored the template on an external server, so I downloaded it again and placed it into the ProjectTemplates Folder. But it didn't show up. I looked into Tools -> Options -> Projects and Solutions -> Locations, where the Project-template-folder was the same as the one where my template is at the moment.
After that I checked the .vstemplate-file, but there was nothing wrong with it. I tried everything what Microsoft told me to do when the Template doesn't show up but now I don't know what else to try
Edit: I looked into %localappdata%\Microsoft\VisualStudio\16.0[MyID]\InstalledTemplates.json where my template is named. but it still doesn't show up when creating a new project
Edit 2: Strangely, after running devenv /updateConfiguration in the developer console, it worked. But normally that command creates a log file, but it didn't, instead the template now shows up