Official documentation checked October 14, 2026. If Microsoft 365 Copilot says that content cannot be used, first record the exact message and the feature you selected. A failure in a Word rewrite, an Excel action, a PowerPoint reference, or a Copilot Chat upload can have different requirements. The message alone does not prove a Microsoft … Read more
When you use Copilot in Microsoft 365 apps, you may see the error message “This prompt violates policy.” This stops your work and prevents Copilot from generating a response. The error occurs because Copilot checks every prompt against your organization’s data usage policies and content filters. These policies are set by your IT admin in … Read more
You type a question in Copilot Chat and see the error: This prompt was blocked by your organization. This message stops your work and leaves you without an answer. The block happens because of content filtering rules set by your IT admin in Microsoft 365. This article explains why the block occurs and shows the … Read more
You need to limit which users in your Microsoft 365 tenant can interact with a specific Copilot Studio agent. By default, agents published from Copilot Studio are available to all users in the tenant who have a Copilot license. This can expose sensitive data or business logic to the wrong audience. This article explains how … Read more
Official documentation checked October 14, 2026. If Copilot still answers after you configure a Microsoft Purview DLP policy, the answer alone does not establish that the policy failed. A rule that blocks external web search can still allow an answer from internal sources. A rule excluding a labeled document can still leave its citation visible. … Read more
You apply a sensitivity label to a SharePoint file to restrict access or prevent Copilot from reading it. But Copilot still summarizes, rewrites, or references the file in its responses. This happens because Copilot reads files based on SharePoint permissions and Microsoft Graph indexing, not solely on the label’s encryption or marking settings. The label … Read more
You ask Copilot a question in Microsoft Teams chat, and the response includes a file that your organization has labeled as Confidential. This exposes sensitive data to users who should not see it. The root cause is a gap between how Microsoft Purview Information Protection sensitivity labels are applied and how Copilot interprets its data … Read more
You open a document protected by a Microsoft Purview Information Protection sensitivity label, such as Confidential or Highly Confidential, and ask Copilot to summarize the content or draft a reply based on it. Instead of returning the expected output, Copilot either refuses to act on the document, returns a generic error message, or skips the … Read more
Microsoft Purview Audit logs record every action that Copilot takes in Microsoft 365 services. Without these logs, administrators cannot verify how Copilot accesses data or which files it processes. This article explains how to search and interpret Copilot activity events in Purview Audit. You will learn the exact search queries, the required permissions, and how … Read more
You have enabled Microsoft Purview auditing for your Microsoft 365 tenant, but the audit log does not display any Copilot prompt events. This means you cannot track what users are asking Copilot or which data sources Copilot is accessing. The root cause is typically that the Copilot-specific audit schema is not enabled or that the … Read more