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.

Enable automatic out of office replies from Outlook for Android or Outlook for iOS. Use rules to send an out of office message. How to send automatic out-of-office replies from Outlook (depending on the type of email account you have).

If you recently made any changes to your hardware and want to see if your computer now meets the requirements for Windows 11, the easiest way to do that is with the PC Health Check app: If you haven't yet, install the PC Health Check app here.

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.

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.

Possible causes. Make sure your PC, the external display, and the cable all support DisplayPort or MHL alternate modes. Make sure the device or dongle is connected directly to your PC. Make sure the device or dongle is connected to the USB-C port on your PC that supports the correct Alternate Mode.

In Windows 11, apps don't automatically get added to your desktop. Learn how to pin apps to your desktop or taskbar in Windows 11 or Windows 10.

You can use installation media (a USB flash drive or DVD) to install a new copy of Windows, perform a clean installation, or reinstall Windows. To create installation media, go to the software download website, where you'll find step-by-step instructions.

Make sure apps have access to the microphone. If your microphone isn't detected after updating Windows 11, you may need to give your apps permission to use it. Here's how: Select Start > Settings > Privacy & security > Microphone and make sure Microphone access is turned on.

在頻道或群組聊天中與 Bot 聊天. Bot 可以參與頻道和群組聊天交談，例如提供重要的更新或協助團隊組織工作。 一般說來，您或其他人@mentions Bot 與其互動，但有些 Bot 可以在交談中扮演更主動的角色。 這些 Bot 會在沒有@mention的情況下接收訊息並回復。