Learn how to sign in to office or microsoft 365 from a desktop application or your web browser. Microsoft combines the latest servicing stack update (ssu) for your operating system with the latest cumulative update (lcu). Welcome to the special edition of what's new in microsoft 365 copilot for both november and december 2025!
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For general information about ssus, see servicing stack.
Find how to set up microsoft account, protect it, and use it to manage your services and subscriptions.
Learn how to install, reinstall, or activate microsoft 365 or office 2024 on a pc or mac. Get support for windows and learn about installation, updates, privacy, security and more. Search for help on the taskbar, use the tips app, select the get help link in the settings app, or go to support.microsoft.com/windows. Learn how to get microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your microsoft account dashboard.
Find help with microsoft store purchases, subscriptions, refunds, payment options, and checking your order history. Every edition, we highlight new features and enhancements to keep microsoft.
