エラー
Opera cannot be upgraded while it is running.
Please exit Opera and, to make sure that it has shut down properly,
wait a few minutes before installing the new version.
Opera cannot be upgraded while it is running
投稿日：
秀和システム新しいOSで、今大注目のWindows11の新機能を完全解説した図解書。自分のパソコンに無料でアップグレードするための準備と実際の手順も丁寧に解説。
