Get help and training for Office products, such as Word, Excel, PowerPoint, and Outlook. Learn tips and tricks, troubleshoot issues, and access online resources.

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排查添加帐户时的密码问题 忘记密码. 如果忘记了Microsoft帐户的密码，请使用我们的 登录帮助程序 重新进入你的帐户，或参阅 重置忘记的Microsoft帐户密码。. 如果忘记了工作或学校帐户的密码，请参阅使用安全信息重置工作或学校密码。. 你会收到有关应用密码的消息

Flag. Start date. Due date. Reminder. Today. Current date. Current date. One hour before the end time of today's work day. Tomorrow. Current date plus one day. Current date plus one day

Tip: If you believe someone has acquired your payment info, contact your bank or your payment provider to prevent more charges. Tell them your credit card has been stolen or compromised - If you only dispute the charges, there's nothing to prevent the fraudulent charges from happening again.

Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

如何兑换礼品卡、Xbox 下载代码或令牌. Microsoft 和 Xbox 礼品卡以及下载代码和令牌的工作方式相同：兑换到 Microsoft 帐户后，可以在 Windows 或 Xbox 上将余额用于Microsoft Store 在线商店，并且可以获取最新应用、游戏、电影、电视节目以及 Surface、Xbox 和配件的下载。

若要向 “安全发件人和收件人”添加条目，请在“ 在此处输入发件人或 域”文本框中要标记为安全的电子邮件地址或域，然后按 Enter 或选择文本框旁边的 “添加 ”图标 。. 例如，要将来自以 contoso.com 结尾的地址的所有电子邮件标记为安全，请在文本框中输入 contoso.com。

Last reviewed December 2nd, 2022. Microsoft 365 Groups is a service that works with the Microsoft 365 tools you use already so you can collaborate with your teammates when writing documents, creating spreadsheets, working on project plans, scheduling meetings, or sending email.

You usually won't need to know the name of your Exchange server. If you do, contact the people who gave you the Exchange email address and ask them for the name of the Exchange server. When you set up a mobile device, the AutoDiscover feature will find the name of your Exchange server and mailbox, and configure Outlook for you.