Introduction

When I translated English to Japanese using Google Chrome page translation, Google Chrome said "This page could not be translated".
So, I introduce how to resolve it.

Error situation

The error situation is as follows.

When I translated English to Japanese using Google Chrome page translation, I got an error message; "This page is could not be translated," and Google Chrome page translation did not work.
I couldn't click the "Try again" button.
In "Option," I set English as the source language and Japanese as the target language, but the result didn't change.
In Incognito Window, I could translate English to Japanese using Google Chrome page translation.

How to solve

Delete all non-default extension
Delete Cookie
Uninstall Google Chrome and reinstall
Reinstall extension

The important point is deleting "your browsing data" when you uninstall Google Chrome.
You may be worried that all your bookmarks and history will be gone, but if you are synced with your Google account, data will be restored by logging in again.