Digital signatures and certificates - Microsoft Support
Signing certificate and certificate authority. Signing certificate To create a digital signature, you need a signing certificate, which proves identity. When you send a digitally-signed macro or document, you also send your certificate and public key.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
Obtain a digital certificate and create a digital signature
To digitally sign an Office document, you must have a current (not expired) digital certificate. Digital certificates are typically issued by a certificate authority (CA), which is a trusted third-party entity that issues digital certificates for use by other parties.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Word 2021, Word 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016, Excel 2013, Word 2013, Outlook 2013, PowerPoint 2013, Office 2013
Change or reset your PIN - Microsoft Support
Change or reset your PIN when you're already signed in. Note: The PIN you use to access your device is different from your Microsoft account password. If you need to reset your Microsoft account password, see Change your Microsoft account password .
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Where to enter your Office product key - Microsoft Support
If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Microsoft 365 for home, Office for business
Fix Bluetooth problems in Windows - Microsoft Support
If you run into problems trying to connect to a Bluetooth device, here are some troubleshooting steps to try. Note: For general info about how to connect a Bluetooth device to your PC, see Pair a Bluetooth device in Windows.
如果 Xbox 遭窃怎么办 | Xbox Support
在账户上，转到“付款和帐单”>“订单历史记录”。. 登录到 Microsoft 帐户. 如发现未知付费，联系 Xbox 支持人员。. 关注帐户以确保任何可能的未授权费用有时间显示到你的帐户。. 如果你的帐户与信用卡或其他支付选项关联，我们建议向金融机构报告失窃事件 ...
Check or change language settings - Microsoft Support
Cortana language settings. Set the region, device language, and spoken language for your products and services.
Applies To:
Outlook.com, Microsoft Edge, OneDrive (home or personal)
Edit your passwords in Microsoft Edge - Microsoft Support
You can easily edit the passwords saved in Microsoft Edge. Important: Changing the password in Microsoft Edge doesn't change the password for the website. You'll need to ensure that the password stored in Microsoft Edge matches the password you've set for the website.
将Microsoft Authenticator应用设置为验证方法 - Microsoft 支持
将Microsoft Authenticator应用设置为验证方法. 可以按照以下步骤添加双因素验证和密码重置方法。. 首次设置此设置后，可以返回到 “安全信息 ”页来添加、更新或删除安全信息。. 如果在登录到工作或学校帐户后立即提示设置此设置，请参阅登录页提示文章中的 ...