Sign in to Microsoft 365
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, Excel 2024 for Mac, Word 2024 for Mac, Outlook 2024 for Mac, PowerPoint 2024 for Mac, OneNote 2024 for Mac, Office 2024 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, OneNote for Mac, Microsoft 365 for home, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac, Project for Office 365
August 27, 2026-KB5122385 Cumulative Update for .NET Framework 3.5 and ...
The August 27, 2026 update for Windows 11, version 25H2 and Microsoft server operating system 24H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security Improvements ...
XBOX Update Preview Release Notes | XBOX Support
Omega Ring (2608.260803-2200) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Omega ring today. Continue reading below to learn all about what's included with this update.
Troubleshoot playing DVDs on your Xbox 360 console | Xbox Support
Learn how to troubleshoot common problems with playing DVDs on the Xbox 360 console.
2026 年 7 月 18 日 — KB5121767 (OS ビルド 26200.8894 および 26100.8894) 帯域外
このアウトオブバンド (OOB) 更新プログラム (Windows 11、バージョン 25H2、Windows 11、バージョン 24H2 (KB5121767) は累積的です。 これには、以前のセキュリティ更新プログラムとセキュリティ以外の更新プログラムのすべての機能強化と、追加の修正が含まれています。 改善点 この OOB 更新プログラム ...
Keyboard shortcuts in Windows | Microsoft Support
Learn how to navigate Windows using keyboard shortcuts. Explore a full list of taskbar, command prompt, and general Windows shortcuts.
Fix OneDrive sync problems | Microsoft Support
Learn how to fix common OneDrive personal or OneDrive for Business sync problems.
Applies To:
OneDrive for Business 24, SharePoint Server 2019, SharePoint Server 2016, SharePoint Server 2013 Enterprise, Office 365 Small Business, Microsoft 365 admin, OneDrive for Business
XBOX Update Preview Release Notes | Xbox Support
Delta Ring (2608.260831-1200) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Delta ring today. Continue reading below to learn all about what's included with this update.
The Xbox 360 console power button blinks red | Xbox Support
The light in the centre of your Xbox 360 console power button is blinking red.
XBOX Support
XBOX Support ... XBOX Support