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IF function - Microsoft Support
How to use the IF function in Excel to make logical comparisons between data values.
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
Excel functions (by category) - Microsoft Support
Lists all Excel functions by their category, such as Logical functions or Text functions.
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
How to check if your email address is a Microsoft account
How to access your Microsoft account? If you have confirmed that your email is a Microsoft account, you can access it by following these steps:
Applies To: Microsoft account dashboard
Outlook データ ファイル (.pst および .ost) を修復する - Microsoft サポート
Outlook データ ファイルを開くことができない場合、またはファイルが破損していると思われる場合は、受信トレイ修復ツール (scanpst.exe) を使用してファイル内のエラーを修復します。
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016
Turn off Defender antivirus protection in Windows Security
Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.
Common problems with two-step verification for a work or school account ...
Change two-step verification settings; Common problems with two-step verification for work or school accounts; Manage app passwords for two-step verification
Upgrade to Windows 10: FAQ - Microsoft Support
Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.
Fix problems with the Start menu - Microsoft Support
Learn more about how to fix problems with the Windows Start menu, and what to do if the Start menu won't open.
Use add-ins in Outlook - Microsoft Support
The dialog that appears varies depending on whether you had the Add Apps or Get Add-ins option available to you. If you selected Add Apps, the Apps dialog appears. If you selected Get Add-ins, the Add-Ins for Outlook dialog appears. Search for the add-in you want from the available list.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, New Outlook for Windows, Outlook Web App
What is: Multifactor Authentication - Microsoft Support
Wondering what multifactor authentication, sometimes known as two step verification, is? This article will explain it clearly.