Block or remove a bot in Microsoft Teams. To stop a bot from participating in a one-on-one chat, first find the chat name in your chat list, then click More options > Mute. If you want to remove a bot entirely from a channel, find the channel name, then click More options > Manage team.

Fix your audio drivers. Hardware problems can be caused by outdated or malfunctioning drivers. Make sure your audio driver is up to date and update it if needed. If that doesn't work, try uninstalling the audio driver (it will reinstall automatically).

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.

If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

We understand that sometimes purchases of digital game products don’t go as planned. When that happens, we’ll help you request a refund. Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date.

Chat with a bot in a channel or group chat. Bots can contribute to channel and group chat conversations, such as providing important updates or helping a team organize its work. Typically, you or someone else @mentions a bot to interact with it, but some bots can play a more proactive role in conversations.

Manually update Surface drivers and firmware. Manual updates are useful if you need to update an offline device, update many devices that are all the same model, or if you’re creating system images for your organization.

Find operating system info in Windows 11. To find out which version of Windows your device is running, press the Windows logo key + R, type winver in the Open box, and then select OK. Here’s how to learn more: Select Start > Settings > System > About . Open About settings.

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。

Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.