Si vous avez acheté Windows 10 ou Windows 11 Professionnel mise à niveau dans l’application Microsoft Store, vous recevrez une licence numérique au lieu d’une clé de produit dans l’e-mail de confirmation envoyé pour confirmer l’achat.

In the search box on the taskbar, type Manage BitLocker and then select it from the list of results. Or, select the Start button, and then under Windows System, select Control Panel.In Control Panel, select System and Security, and then under BitLocker Drive Encryption, select Manage BitLocker. Note: You'll only see this option if BitLocker is available for your device.

Note: If you don't see the option to Restore preinstalled apps, it means your PC doesn't have preinstalled apps configured. In versions of Windows 10 prior to version 2004 this feature was called Fresh Start and to use it you'd select Start > Settings > Update & security > Windows Defender > Device performance & health .

Note: If you don't see a Security processor entry on this screen then it's likely that your device doesn't have the TPM (Trusted Platform Module) hardware necessary for this feature or that it's not enabled in UEFI (Unified Extensible Firmware Interface). Check with your device manufacturer to see if your device supports TPM and, if so, steps ...

To access your sign-in options, go to Start > Settings > Accounts > Sign-in options.. Or just select this button: Go to Sign-in options. Change or manage your password or PIN. To change your password or PIN, go to Start > Settings > Accounts > Sign-in options. Select PIN (Windows Hello), and then select Change PIN.

注: Windows スポットライト オプションを選択できない場合は、管理者が機能を無効にしているか、まだ更新プログラムを取得していない可能性があります。 この機能は、一定期間にわたってロールアウトされています。 詳細については、「 Microsoft 365 の最新機能はいつ入手できますか?」を参照 ...

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

開始する前に. Windows 11 をインストールするデバイスが、最小システム要件 を満たしていることを確認します。 デバイスで Windows 10 を実行中の場合、Windows PC 正常性チェック アプリ を使用して、最小システム要件を確認することをお勧めします。 要件を満たしていないデバイスに Windows 11 を ...

了解如何在 Microsoft Edge 中启用 Adobe Flash。

If these steps didn't work, or you have other account sign in issues, use our Sign-in helper tool. Microsoft account security info & verification codes. How to help keep your Microsoft account safe and secure. Change or reset your Windows password. Accessing the account of someone who has died