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Microsoft security help and learning
Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.
WEEKNUM function - Microsoft Support
This article describes the formula syntax and usage of the WEEKNUM function in Microsoft Excel.. Description. Returns the week number of a specific date. For example, the week containing January 1 is the first week of the year, and is numbered week 1.
Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016
Create a system repair disc - Microsoft Support
In the left pane, click Create a system repair disc, and then follow the steps. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
“Microsoft 手机连接”和“连接至 Windows” 简介 - Microsoft 支持
自从我们在 2018 年 10 月首次宣布“你的手机”和“你的手机助手”应用以来,这是一个令人兴奋的旅程。 从那时起,我们就开始把所有重要的功能和内容从 Android 手机带到了 Windows 电脑。
Microsoft Bing help - Microsoft Support
Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.
My Account portal for work or school accounts - Microsoft Support
Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method
Choose between the 64-bit, 32-bit, and ARM version of OneDrive
If you're not sure which OneDrive version is better for you, you can review the reasons to choose the 64-bit version, the 32-bit version, ARM64 version for Windows, or the Apple silicon version for Mac. If you know what version you want, you can learn how to install it.. If you already have OneDrive, but you're not sure which version you have, check out Which version of OneDrive am I using?
Applies To: OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
打开或关闭 Microsoft Defender 防火墙 - Microsoft 支持
若要将其关闭,请将设置切换为“关闭”。 关闭 Microsoft Defender 防火墙可能会使设备(以及网络,如果有)更容易受到未经授权的访问。
Mark a message as important or urgent in Microsoft Teams
To help make sure your message gets noticed, mark it as important or urgent. Select Set delivery options underneath the box where you type your message.
Applies To: Microsoft Teams
Sign out of email - Microsoft Support
Log out of Outlook to protect your personal information. Important: Outlook.com, Outlook Web App, and Outlook for Windows are not all the same. Outlook for Windows are programs on your local computer that you can use to access any type of email account, whereas with Outlook.com and Outlook Web App, you access them through your Internet browser.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016