Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

Get the steps for how to transfer photos and videos from your portable devices to your PC.

Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.

Windows 7、Windows 8.1、Windows 10 のインストールや再インストールで必要となるインストール メディアの作成方法について説明します。

Learn how to open a shared mailbox in Outlook. Shared mailboxes let a group of users view and send email, and share a calender, and open a contact list from a common mailbox.

デバイスの最新の Windows 更新プログラムの準備ができたら、[設定] の [Windows Update] ページからダウンロードできます。

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Learn how to enable virtualization through the UEFI (or BIOS) of your PC to run the Windows Subsystem for Android or Windows Subsystem for Linux.

Things to try to fix touchpad problems in Windows 10 and 11. If your touchpad isn’t working, it may be a result of a missing or out-of-date driver.

Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.