I had the exact problem, my VS code was located on:
C:\Users\<User>\AppData\Local\Programs\Microsoft VS Code\_

The culprit is folder "_"; it looked like this happened during the installation.

These are the steps what I did to solve the problem:

1. Use Window Explorer, then select the entire files under the above folder,
2. Click Cut
3. Then paste to the following folder:
   C:\Users\<User>\AppData\Local\Programs\Microsoft VS Code\

That's it and I hope it helps. Happy coding!