Right-click on the status bar at the bottom and make sure the Live Server (Extension) is selected. That will hide/unhide the Go Live button on the status bar.

I had this problem and I solved it by changing the port number in the settings.json file to an opened one.

To get to the settings.json file you just click CTRL+SHIFT+P, then type "settings", click the "Preferences: Open Settings (JSON)", then paste this inside the { }:

"liveServer.settings.port": 0

This will randomly pick an opened port each time. This is how my JSON file looks like:

{
    "liveServer.settings.port": 0
}

If there are multiple lines in the JSON file, make sure each line is separated by a comma(,), like this:

{
    "liveServer.settings.CustomBrowser": "microsoft-edge",
    "liveServer.settings.port": 0
}

i cannot have two project folders with an html file running through the live server. Only one html file can be streamed at one time other wise when trying to stream the second, it will stream the first (Like the issue i was having)

Setting the file type to ".html" fixed my problem.

Thank you Oneli Jayodya for giving me the troubleshooting information, you're amazing. I'll be sure to do the other steps in case it errors again.

For those who don't know how to do it and having this same issue, here's how!

1. Open up Visual Studio Code
2. Select your file with your code
3. Click "File" tab in the corner of the upper hotbar
4. On the window that pops up click "Save As"
5. With the file window that pops up, click "Save As Type" bar
6. Find "HTML", select it, and save your file
7. Run your live server, should work now and show your code in action!

This should fix your problem if you didn't save your file as an HTML. If not, check the other solutions Jayodya offered. Shes awesome!