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Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
If you still don't see an option to install Microsoft 365 on the Microsoft 365 Software page, it's possible your admin hasn't assigned a license to you. Find out if you have a license to install Microsoft 365. If you're a student or teacher and your institution didn't give you a license, find out if you're eligible to Get Microsoft 365 for free.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Ändern der Browser-Startseite - Microsoft-Support
Geben Sie auf der Registerkarte Allgemein unter Startseite die URL der Website ein, die Sie als Startseite festlegen möchten. Sie können mehrere URLs hinzufügen. Für die aktuell angezeigte Website wählen Sie Aktuelle verwenden.Wenn Sie mehr als eine URL verwenden, fügen Sie jede URL in eine eigene Zeile ein.
Windows のライセンス認証を行う - Microsoft サポート
Windows 11でアクティブ化の状態をチェックするには、[スタート] ボタンを選択し、[システム > 設定] を選択し、[ アクティブ化 ] を選択します。 アクティブ化の状態が [アクティブ化] の横に表示されます。[設定] でアクティブ化の状態を確認する
Manage devices used with your Microsoft account
If you can't download apps and games, review your linked devices then select Unlink to allow new devices to be added. Register a device to see its warranty To see the warranty coverage for your Surface, Surface accessory, Xbox, or Xbox accessory, you'll need to register its serial number.
Applies To: Microsoft account dashboard
Windows Update トラブルシューティング ツール - Microsoft サポート
Windows 更新プログラムのダウンロードおよびインストール中にエラー コードが表示された場合は、Windows Update トラブルシューティング ツールが問題解決に役立ちます。
How to download and install the latest printer drivers
If your printer isn't responding, downloading and installing the latest printer driver can often resolve these problems. Install the latest printer driver. Here are several ways to update your printer driver. Use Windows Update. Windows Update might find an updated version of your printer driver. To use it:
Perform an offline system update | Xbox Support
Click Save to save the console update.zip file to your computer.; Unzip the file by right-clicking on the file and selecting Extract all from the pop-up menu.
Excel が応答しない、停止する、フリーズする、動作しなくなる
セーフ モードのトラブルシューティング. Excel をセーフ モードで実行すると、代替の起動場所、変更されたツール バー、Excel アドイン、およびほとんどの COM アドインで使用されるスタートアップ フォルダーなどの機能と設定がバイパスされます。
Applies To: Excel for Microsoft 365, Excel 2021, Excel 2019, Excel 2016
Freeze panes to lock rows and columns - Microsoft Support
To keep an area of a worksheet visible while you scroll to another area of the worksheet, go to the View tab, where you can Freeze Panes to lock specific rows and columns in place, or you can Split panes to create separate windows of the same worksheet.
Applies To: Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Create and format a hard disk partition - Microsoft Support
To create a partition or volume (the two terms are often used interchangeably) on a hard disk, you must be logged in as an administrator, and there must be either unallocated disk space or free space within an extended partition on the hard disk.