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您好 Wayne Xie 谢沈军，
欢迎您在论坛中发帖，我们很乐意帮助您。
根据您的描述，该问题已被报告为服务器事件 SP843810。 从 2024 年 8 月 01 日 02:07 AM (CST) 开始，此问题已作为事件 SP843810 以及 OD843843发布到Microsoft 365 管理中心的服务健康仪表板 (SHD)。详细报告如下（很抱歉，报告本身是英文的，您可以将报告翻译为中文）：
Title: Some users may incorrectly receive a security warning prompt when opening some Office files in SharePoint Online
User impact: Users may incorrectly receive a security warning prompt when opening some Office files in SharePoint Online.
More info: More specifically, users may incorrectly receive a security prompt when opening Excel, PowerPoint, or Word files in their respective web apps within SharePoint Online. Also, affected users may see the following message "This content presents a potential issue".
Current status: After reviewing the service telemetry, we've determined that the security warning prompt is the result of a necessary short-term fix for a separate issue that was recently implemented. We're creating a long-term fix for this separate issue that’ll remove the need for this false security warning prompt, remediating impact. We expect that it will complete development and deploy on Tuesday, August 13, 2024. To suppress the warning for trusted sites, tenants can add the trusted sites and hostnames in the internet zones feature.
Scope of impact: Impact is specific to some users who are served through the affected infrastructure, and the problem impacts users attempting to open Excel, PowerPoint, or Word files in their respective SharePoint Online web app.
Root cause: A necessary short-term fix for a separate issue was recently implemented, causing users to receive a security warning prompt when opening Excel, PowerPoint, or Word files in SharePoint Online.
您组织的管理员或 IT 部门可通过此处的链接查看有关 SHD 的当前信息和更新。
https://admin.microsoft.com/Adminportal/Home#/servicehealth/:/alerts/SP843810
基于以上服务器事件，您可以将此问题报告给您组织的管理员或 IT 部门，他们可以通过以上链接或者直接访问Microsoft 365 admin center来查看该服务器事件的进度。
同时，有一个临时的解决方案，您可以在受影响的用户设备上尝试以下步骤。
打开控制面板，Internet选项 （Internet Options） ，安全 （Security） ，受信任的站点 （Trusted site），站点 ，添加以下网址添加，之后重新运行Teams和Office客户端并查看结果。
https://{your-domain-name}.sharepoint.com
https://{your-domain-name}-my.sharepoint.com
由此给您带来的不便，我们深表歉意。感谢您的理解和耐心。
诚挚的祝愿，
George | Microsoft Community Moderator