Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

To verify that your digitally signed message was received unaltered by the intended recipients, select the Request S/MIME receipt for all S/MIME signed messages check box. You can request notification telling you who opened the message and when it was opened, When you send a message that uses an S/MIME return receipt request, this verification information is returned as a message sent to your ...

To get support in Outlook.com, click here or select Help on the menu bar and enter your query. If the self-help doesn't solve your problem, scroll down to Still need help? and select Yes.. To contact us in Outlook.com, you'll need to sign in.

Here's how to display hidden files and folders. Windows 10  In the search box on the taskbar, type show hidden files, and then select Show hidden files from the search results.

Go to Bluetooth & devices > Printers & scanners > select a printer.Then select Set as default. If you don't see the Set as default option, the Let Windows manage my default printer option may be selected.You'll need to clear that selection before you can choose a default printer on your own. Open Printers & scanners

联系 Microsoft 支持人员。查找常见问题的解决方案，或从支持专员那里获取帮助。

Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date; Requests are for games in which you haven’t accumulated a significant amount of play time

Creating an online account usually involves entering your information into a form containing multiple fields, such as name, email address, date of birth, password, and more.

了解如何从 Microsoft 365 商业版订阅下载和安装所需的应用。

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.