Windows 11 でオペレーティング システムの情報を見つける. お使いのデバイスで実行中の Windows のバージョンを確認するには、Windows ロゴ + R を押し、[開く] ボックスに「winver」と入力して、[OK] を選択します。 詳細を確認する方法は次のとおりです。

Learn more about how to fix problems with the Windows Start menu, and what to do if the Start menu won't open.

Learn how to download and customize Windows Media Player. Get troubleshooting help and how-to information for Windows Media Player 12.

Having a backup copy of your BitLocker recovery key helps to prevent serious issues later. It takes less than a minute to back up your key and this article will show you how.

Learn how to protect your PC, identity, and data from tech support scams.

In Outlook, sometimes your outgoing messages get stuck in your outbox and just won't send. Learn about some ways to get them moving.

Change your screen saver settings. Select the Start button, then go to Settings > Personalization > Lock screen, and select Screen saver settings.In the Screen Saver Settings window, choose a screen saver from the drop-down list.

Add additional privacy protection to email messages with encryption.

How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.

Try it! OneDrive gives you one place to store, share, and sync your work or school files. As part of your organization's Microsoft 365 subscription, or SharePoint Server, you can save your files in OneDrive and then work with them from almost any device.