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Note: If you forgot your account info and had to reset your security info, you must wait 60 days before closing your account.

Windows Server, version 23H2; July 9, 2024—KB5040438 (OS Build 25398.1009) June 11, 2024—KB5039236 (OS Build 25398.950) May 14, 2024—KB5037781 (OS Build 25398.887)

Important: If you turn on two-step verification, you will always need two forms of identification.This means that if you forget your password, you need two contact methods. Or if you lose your contact method, your password alone won't get you back into your account—and it can take you 30 days to regain access.

In Outlook, you have the flexibility to make Outlook work online or offline with your mail server. Select a tab option below for the version of Outlook you're using.

BitLocker is the Windows encryption technology that protects your data from unauthorized access by encrypting your drive and requiring one or more factors of authentication before it will unlock it.

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The COUNTIFS function is similar to the COUNTIF function with one important exception: COUNTIFS lets you apply criteria to cells across multiple ranges and counts the number of times all criteria are met. You can use up to 127 range/criteria pairs with COUNTIFS. The syntax for COUNTIFS is: COUNTIFS(criteria_range1, criteria1, [criteria_range2, criteria2],…)

In Outlook, you have the option to: Snooze or dismiss events or tasks | Turn the notifications on or off | Add reminders to events | Add reminders to tasks | Troubleshoot notifications. Snooze or dismiss an event or task. With the reminders window, you can select to snooze calendar events and tasks, join a Teams meeting, or dismiss events and tasks.

Windows 11 のライセンス認証を行う場合は、「 Windows のライセンス認証を行う」を参照してください。