Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Learn how to recover files that have been lost, deleted, or accidentally changed.

Learn how to change or reset your Windows password if you've forgotten or lost it.

Use Microsoft Teams (work or school) for a Microsoft work or school account or a guest account in Windows 11. Also, find out which version of Teams you’re using.

Learn how to improve Windows PC performance if your device is running slowly.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Learn how to navigate Windows using keyboard shortcuts. Explore a full list of taskbar, command prompt, and general Windows shortcuts.

How to use conditional formatting in Excel to visually explore, analyze, and identify patterns and trends.

To download the offline installer for Internet Explorer 11, choose your language and system below.