- Sign in to Microsoft 365
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser
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Get help for the account you use with Microsoft Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions
- Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or . . .
Install Microsoft 365 or Office 2024 on a PC Depending on your browser, select Run (in Microsoft Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox) If you see the User Account Control prompt that says, Do you want to allow this app to make changes to your device? select Yes The install begins
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Find out how to get support for Microsoft apps and services
- Microsoft 365 help learning
Get support, help, and learning resources for Microsoft 365 Organize your life, expand your creativity, and protect what’s important with Microsoft 365
- Introducing new security and compliance add-ons for Microsoft 365 . . .
A: Yes Customers currently using the Microsoft 365 E5 Security add-on with Microsoft 365 Business Premium are eligible to transition to the new Defender Suite beginning with the October billing cycle For detailed guidance, please refer to the guidelines here Q: As a Partner, how do I build Managed Detection and Response (MDR) services with MDB?
- February 10, 2026—KB5077181 (OS Builds 26200. 7840 and 26100. 7840 . . .
Microsoft Store apps updates Change log Improvements This security update contains fixes and quality improvements from KB5074109 (released January 13, 2026) KB5077744 (released January 17, 2026), and KB5078127 (released January 24, 2026) The following summary outlines key issues addressed by this update Also, included are available new features
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