Signing certificate and certificate authority. Digital signature assurances. What is a digital signature? A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A signature confirms that the information originated from the signer and has not been ...

Create a digital certificate to digitally sign a document immediately. If you do not want to purchase a digital certificate from a third-party certificate authority (CA), or if you want to digitally sign your document immediately, you can create your own digital certificate.

Activate Microsoft 365 or a non-subscription version of Office. When you start an Microsoft 365 app that's not activated, you'll be prompted to sign in to Microsoft 365. Be sure to sign in using the Microsoft account, or work or school account, that you used to buy or subscribe to Microsoft 365.

How to redeem a gift card, Xbox download code or token. Both Microsoft and Xbox gift cards and download codes and tokens work the same way: once redeemed to your Microsoft account, you can spend your balance at Microsoft Store online, on Windows or Xbox, and you can get downloads for the latest apps, games, movies, TV shows, and Surface, Xbox ...

You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.

为了确保 Xbox Live Gold 订阅服务的定价反映当地市场行情，Xbox Live Gold 订阅卡只能在购买所在的国家或地区兑换，而不能在其他国家或地区兑换。. 如果需要在线购买 Xbox Live Gold 订阅卡，我们强烈建议从所居住的国家或地区购买，以避免出现潜在的问题。.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.

From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.

請依照下列步驟以重設您的 Microsoft 帳戶密碼。. 依照本頁面的步驟變更您用來登入 Microsoft 帳戶的電子郵件地址或電話號碼 (也稱為您的帳戶別名或使用者名稱)。. 擔心您的授權嗎？. 如果您變更帳號別名或移除別名，然後新增別名，則連結到您 Microsoft 帳戶的 ...

Can't sign in to Microsoft 365 desktop applications. To provide temporary relief, these steps may help: Rebooting the device often helps to mitigate the issue. Run the commandlets below in user mode PowerShell to repair WAM. For more context see the article, Authentication fails in Microsoft 365 services.