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Provides information for avoiding and reporting Microsoft technical support scams.

If you didn't ask us to, we won't call you to offer support. If a pop-up or error message appears with a phone number, don’t call the number. Error and warning messages from Microsoft never include a phone number. Microsoft will never ask that you pay for support in the form of cryptocurrency like Bitcoin, or gift cards.

Phishing (pronounced: fishing) is an attack that attempts to steal your money, or your identity, by getting you to reveal personal information -- such as credit card numbers, bank information, or passwords -- on websites that pretend to be legitimate. Cybercriminals typically pretend to be reputable companies, friends, or acquaintances in a fake message, which contains a link to a phishing ...

Microsoft正在对永久许可证的激活体验进行现代化改造。 从 2025 年 12 月 3 日起，传统的基于电话的产品激活自动化过程已从电话转移到在线。 客户将改用产品激活门户： 产品激活门户 新的数字工作流提供更安全、更可靠且用户友好的激活体验，并有助于防止欺诈。 虽然该过程已更新，但脱机激活 ...

Learn what to do when you receive a NAT type: Unavailable error message on Xbox.

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

如果我的代码来自其他区域，该怎么办？ 某些数字代码适用于可能与帐户上的区域设置不匹配的特定国家/地区。 如果你的帐户与你的物理区域匹配，并且你的代码是从你所在地区的零售商处购买的，请确保设备上的区域也与你的物理位置匹配。 若要从 Xbox 主机执行此作，请执行以下作：

Learn how to register your Xbox product so that you can request and track repairs, check your warranty service, and buy an extended service plan. There’s also info on unregistering and unlinking your device.

Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.