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. This article will help you troubleshoot and fix common activation errors in Windows. For help finding your product key, see Find your Windows product key.

Find solutions to common problems or get help from a support agent. By pressing submit, your feedback will be used to improve Microsoft products and services. Learn how to use the Activation troubleshooter to resolve common activation issues in Windows.

Command Prompt and Windows Powershell for Windows 11. In Windows 11 22H2, the default app used to host console windows has been changed to Windows Terminal. After the October 2022 update, Command Prompt, Windows PowerShell, and other console apps will appear inside an instance of Windows Terminal.

Turn on standard BitLocker encryption. Sign in to your Windows device with an administrator account (you may have to sign out and back in to switch accounts). For more info, see Create a local or administrator account in Windows.

For example, if you're connecting a Thunderbolt device, make sure it’s connected to the USB-C port on your PC that supports Thunderbolt. The device or dongle isn't connected to the correct USB-C port on your PC. The device or dongle is connected to your PC using an external hub or dock.

光敏性癫痫警告. 极小部分人可能会在看到特定视觉图像（包括可能出现在视频游戏中的闪烁效果或图案）时出现癫痫症状。. 甚至没有癫痫史的人也可能具有一些可能会在玩视频游戏时导致“光敏性癫痫发作”的未确诊症状。. 如果你出现任何症状，请立即停止 ...

Go to Settings > Apps > Apps & features to change whether you're shown app recommendations when trying to install apps from outside the Store.

在云游戏期间遇到的大多数音频和视频问题是由网络连接问题引起。. 为了获得最佳云游戏体验，请确保设备和网络满足最低系统要求。. 有关详细信息，请参阅：. 设置用于云游戏的 Android 设备. 为了提高网络性能，请记住以下事项：. 如果无线连接设备时，请 ...

For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Your case review’s status may display as one the following: Under Review: We’re still investigating your case review inquiry. Need Info: We need more info from you. Check the agent’s latest comment, provide the additional info that’s requested, and then submit to continue the investigation.