Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

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.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code. Searching for Microsoft Defender in your app store. Sharing with your devices, the following link: Copy link.

您的目录数据（姓名、注册日期和电子邮件）可能会显示给管理员以及您所在组织的其他服务用户。. 当您使用 Microsoft Teams（免费版）的社交功能时，您所在组织的其他最终用户可能会看到您的某些活动。. 如要了解有关社交功能和其他功能的更多信息，请查阅 ...

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.

With External Access for Teams, you can add or invite anyone outside of your Teams org who uses Teams, Teams for personal use, Skype (for consumers), and Skype for Business to a one-to-one chat. For those who use Teams or Teams for personal use, this includes both one-to-one chats and new or existing group chats.

POP, IMAP, and SMTP settings for Outlook.com. POP and IMAP settings for Outlook Office 365 for business. Sync basics - what you can and cannot sync. Learn the difference between IMAP and POP, and when to use each one.

Enable editing in your document. If you receive or open a document and can't make any changes, it might be Open for viewing only in Protected View. Follow these steps to edit: Go to File > Info. Select Protect document. Select Enable Editing.

Cancel Microsoft 365 with the help of a support advocate. If you're thinking of cancelling a Microsoft 365 subscription or need help switching to another plan that better meets your needs, support agents are available to help. Request a call back.