Error loading webview: Error: Could not register service workers: TypeError: Failed to register a ServiceWorker for scope

Question

When I update my VSCode to v1.56.2 and open webview, I get these messages:

Error loading webview: Error: Could not register service workers: TypeError: Failed to register a ServiceWorker for scope ('vscode-webview://867f875b-c5a3-4504-8de2-2e8614bdc0f8/') with script ('vscode-webview://867f875b-c5a3-4504-8de2-2e8614bdc0f8/service-worker.js?platform=electron&id=867f875b-c5a3-4504-8de2-2e8614bdc0f8&vscode-resource-origin=https%3A%2F%2F867f875b-c5a3-4504-8de2-2e8614bdc0f8.vscode-webview-test.com'): ServiceWorker cannot be started.

How can I solve this issue?

Answer 1

If you are using Ubuntu, there is probably another (maybe hidden) vscode process, which is causing the problem.

Try killall code.

Answer 2

I encountered this issue and am not a Windows user, so this is my resolution:

I found that there was an instance of VS Code open that was erroneously not shown on my dock. I closed this instance and opened a new instance. The problem was gone.

I think the issue happened because I had a VS Code instance open, allowed a software update to run in the background, postponed the restart, opened a new and updated VS Code instance, and the old instance remained open causing conflicts.

OS: Ubuntu 20.04.2 LTS