Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Windows 11 Windows 10 Activation helps verify that your copy of Windows is genuine and hasn’t been used on more devices than the Microsoft Software License Terms allow. If you're unable to activate Windows 11, the Activation troubleshooter could help. To use the troubleshooter, select Start > Settings > System > and then select Troubleshoot .

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Lists the error codes that may be reported by Device Manager and the possible resolutions in Windows.

Keeping your Surface up to date helps it perform at its best. In addition to software updates for Windows, it's also important to install hardware updates—these include drivers and firmware. Each Surface device is eligible to receive new driver and firmware updates until its end-of-servicing date listed in Surface devices driver and firmware lifecycle for Windows-based devices. You can ...

Windows troubleshooters Network and internet troubleshooter Use the network and internet troubleshooter if you are having difficulty connecting to the internet or other network. Open the Get Help app. In the Search bar, enter connect to network and internet⁠.⁠ Select Run network diagnostics. Complete any troubleshooting steps provided until you can connect successfully.

Summary Disk Management is a built‑in Windows tool that helps you manage disks and volumes. You can use it to initialize new drives, create and format volumes, change drive letters, and extend or shrink existing volumes. Open Disk Management: You can open Disk Management in several ways: Start menu (recommended): Right‑click (or long‑press) the Start button, then select Disk Management ...

Windows Secure Boot certificate expiration Important: Secure Boot certificates used by most Windows devices have started expiring in June 2026. This might affect the ability of certain personal and business devices to boot securely if not updated in time. To avoid disruption, we recommend reviewing the guidance and taking action to update certificates in advance. For details and preparation ...

Introduction Microsoft is rolling out updated Secure Boot certificates to Windows devices to maintain protection against evolving boot-level threats. Most devices receive these updates automatically through Windows Update. This article explains why some devices are blocked from updating Secure Boot certificates, what this means, and what actions you can consider.

Resolve Windows blue screen errors with tips and resources to do your own troubleshooting, or contact the Microsoft support if you need more help.