To make sure your device can successfully update and that it runs its best, Windows reserves a portion of storage space on your device for use by temporary files, caches, and other files.

Learn how to tell if your Office software is genuine. To help determine if your Microsoft software is genuine, go to our How to Tell site for more information. Here you'll learn about authentic packaging, including what to look for with product key labels, and Certificate of Authenticity (COA), how to report counterfeit software, and find out what your shopping and licensing options are.

Devices running Windows 11 version 22H2 and older. If you're running Windows 11 version 22H2 and older, Windows 10, Windows 8.1, Windows 7 or any other earlier OS version, your device will not be affected by the MSDT Troubleshooter retirement.

To avoid the possibility of a DoS or DDoS attack: Don't use apps that might expose your network's IP address. Social apps, including some made for online multiplayer or VoIP (voice over internet protocol) software, can expose your IP to others in your session.

On a device that uses battery power, if you select Start > Settings > Personalization > Taskbar and the Power toggle is greyed out or not visible, in the Search box on the taskbar, type device manager, and then select Device Manager in the list of results. Under Batteries, right-click (or long-press) the battery for your device, select Disable, and select Yes.

Unplug the network cable from the back of your console. Inspect the cable’s connector and the Xbox console’s socket to make sure that they are clean and free of debris.

Install the S/MIME control. Get a certificate, sometimes referred to as a key or digital ID. The first step to use S/MIME is to obtain a certificate from your IT administrator or helpdesk.

提示: 如果未将 Visio 列为“ 应用 & 设备”下的安装选项，则可能意味着你没有许可证。检查分配的许可证，如果你没有在指定的订阅项下看到 Visio 计划 2，请与你的管理员联系以获取帮助。如果你是 Microsoft 365 管理员，请了解如何为用户分配许可证。

Keeping leading zeros and large numbers in Excel. Use a custom format to keep the leading zeros. If you want to resolve the issue just within the workbook because it's not used by other programs as a data source, you can use a custom or a special format to keep the leading zeros.

If you travel often, your new locations may show as unusual activity. To travel without disruptions or alerts, we recommend using Microsoft Authenticator to sign in.. If you get an email about unusual activity and you're not sure if it's from Microsoft, you can safely sign in to your Microsoft account any time without clicking links in the email.