Copilot

You are in the middle of a detailed conversation with Copilot in Microsoft 365 when the session stops responding. A banner appears at the top of the chat pane: Connection Lost. This error is most common in long conversations that involve multiple file uploads, complex document summaries, or iterative code generation. The root cause is … Read more

When you ask Copilot a question in Microsoft 365 and it replies only with the message “Content filtered” and no actual output, you cannot see the answer you requested. This problem typically happens because Copilot’s built-in content moderation system flagged your prompt or the generated response as violating a policy rule, and it blocked the … Read more

Copilot in Excel can misidentify table headers when analyzing data, returning incorrect column names or treating data rows as headers. This happens because Copilot relies on Excel’s structured table metadata rather than visual formatting alone. A table must be formally defined as an Excel table, not just formatted with bold text or colored cells. This … Read more

When you try to use Copilot in Microsoft 365 and see a 500 Internal Server Error, your work stops. This error means the server that processes your Copilot request cannot complete the action. It can happen in any Microsoft 365 app like Word, Excel, or Teams. This article explains why the 500 error occurs and … Read more

You ask Copilot a work question inside Microsoft 365 apps. It replies with a generic refusal: I cannot help with that. This happens even when the request is valid and within your organization’s data policies. The root cause is often a mismatch between Copilot’s grounding configuration and the data source you are trying to query. … Read more

When you chat with Copilot in Microsoft 365 apps, the assistant may forget what you said a few messages ago. This happens because Copilot has a limited context window that resets after a certain number of turns. The context window is the amount of recent conversation history the model can reference at once. This article … Read more

You see the error message File Type Not Supported when you try to upload a document to Copilot in Microsoft 365 Chat or Copilot in Word. This error occurs because Copilot can only process a specific set of file formats for grounding and content generation. The file you are uploading uses an extension or encoding … Read more

You are working in Word when Copilot suddenly stops responding, the pane freezes, or the plugin crashes repeatedly in a loop. This crash loop prevents you from using any Copilot features, including drafting, rewriting, or summarizing content. The issue usually stems from a corrupted plugin state, conflicting add-ins, or a damaged Word settings file. This … Read more