If you can't find a file on your computer or you accidently modified or deleted a file, you can restore it from a backup (if you're using Windows backup) or you can try to restore it from a previous version.

Windows 11 Windows 10. If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.

Select your version of Microsoft 365 below to learn how to activate Microsoft 365. Activate Microsoft 365 or a non-subscription version of Office. Activate Office that's pre-installed on a new Windows device. Activate an Office purchase or offer that's included on a new Windows device.

To enable JavaScript in Firefox, please review and follow the instructions provided at JavaScript settings for interactive web pages. This article describes step for users to allow all Web sites in the Internet zone to run JavaScript in Internet Explorer, Chrome, and Firefox.

Fix Outlook.com email sync issues, including sign-in problems. Troubleshoot Outlook.com email issues that trigger a "delivery failed" error. Troubleshoot known issues with shared calendars in Outlook. Reconnect my Outlook 2016 or Outlook 2013 account to Outlook.com.

The Microsoft Support and Recovery Assistant works by running tests to figure out what's wrong and offers the best solution for the identified problem. It can currently fix Office, Microsoft 365, or Outlook problems.

Booting from a USB device doesn’t refresh or reset your Surface. Instead, it lets you start your Surface using Windows or another operating system that’s on your USB device. For info about how to create a bootable USB drive for your Surface, see Creating and using a USB recovery drive for Surface.

Switch voice typing languages. To switch voice typing languages, you'll need to change the input language you use. Here's how: Select the language switcher in the corner of your taskbar. Press the language switcher in the bottom right of the touch keyboard.

Wired connections: Activate and use any wired connections, including Ethernet, USB, and Serial communications between your device, the internet, and other devices. Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

If you don't want to record or transcribe confidential meetings in Teams, you can still engage with Copilot when it's set to "Only during the meeting" in your Meeting options. When you join a meeting, select Copilot to open it on the right of the meeting view.