Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips.Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

You might be prompted for the BitLocker recovery key during startup, due to a security risk or hardware change:

购买新电脑. 如何知道现在是使用新电脑的时候了. 帮助我选择新的Windows 11电脑. 帮助我选择由 Microsoft 设计的笔记本电脑

It's a good idea to create a recovery drive. That way, if your PC ever experiences a major issue such as hardware failure, you'll be able to use the recovery drive to reinstall Windows 11.

In the System > Recovery window that opens, under Recovery options, next to Go back select the Go back button.

Test your camera with the Camera app. Select Start , then choose Camera from your apps. If you're asked to allow access to the Camera, select Yes.If the camera works in the Camera app, the problem might be with the app you're trying to use.

Summary. Microsoft was made aware of a vulnerability in Windows that allows an attacker with administrator privileges to replace updated Windows system files that have older versions, opening the door for an attacker to reintroduce vulnerabilities to Virtualization-based security (VBS).. Rollback of these binaries might allow an attacker to circumvent VBS security features and exfiltrate data ...

If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com settings.. Outlook and Outlook.com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings.

The issues you encounter when trying to install Microsoft 365, or Office 2021, 2019, or 2016 and how you fix them depends on whether your product is part of an Office for home or Office for business plan.. In addition, with Office for business plans only admins responsible for managing Microsoft 365 in their organization can do certain tasks. Therefore, admins should view the issues and ...

Info for Windows Insiders. If you’re an Insider and the current preview build isn’t working for you, select Start > Settings > System > Recovery .Next to Go back , select Go back.This won’t remove your personal files, but it’ll remove recently installed apps and drivers, and change settings back to their defaults.