Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

Last Updated: November 6, 2024 ISSUE When you try to create a new signature linked to your own account (cloud signatures), you notice that the newly created signature gets deleted after a while or you may find that the signature does not sync up with Outlook Web App (OWA). Outlook Desktop added roaming signatures starting in Version 2303 and higher. For more information, please go to Outlook ...

A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Track known issues and bugs that were reported by the Xbox community for Indiana Jones and the Great Circle.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

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。

Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.

When a user runs an Office app, such as Word or Excel, diagnostic information is collected and saved to log files on the user’s device. These log files contain information about the processes and components running in the application, and can help detect, diagnose, and fix issues and help make improvements to Office. This information is very similar to optional diagnostic data that may ...

Applies to: Win 10 Ent LTSB 2016 This security update includes fixes and improvements that are a part of the following update: October 14, 2025—KB5066836 (OS Build 14393.8519) The following is a summary of the issues that this update addresses. The bold text within the brackets indicates the item or area of the change we are documenting. [App compatibility (known issue)] Fixed: This update ...

下载 Microsoft 365 Access 运行时，如果你没有 Microsoft 365 Access 桌面版本，并且需要使用构建的应用程序来运行 Access 2010 或更高版本，则允许运行 Microsoft 365 Access 应用程序。