PIO is hung up on Open

Finally really felt like it, so I opened a project. But it’s been Rebuilding Intellisense Index for eight minutes. Last time, it was Getting Tasks or something like that.

It won’t build, won’t upload, and there is no serial output where some should be.

I reopened it a few times, ran an update, updated libraries. I uninstalled and reinstalled the PIO extension. But nothing on the bottom menu is happening. Error window says “command ‘platformio-ide.build’ not found” or “clean…”.

That’s what i expect to happen when PIO runs background functions like the intellisense rebuild. But it’s ten minutes now.