Opera cannot be upgraded while it is running
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.
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。
