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Microsoft Office Copilot Issues with Multiple Apps Running

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1 unique sources, 1 articles

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Microsoft is investigating a bug affecting Microsoft 365 customers that causes issues with Copilot when multiple Office applications are running simultaneously. The bug occurs when one Office application initiates a WebView2 instance, and another attempts to start a second instance. The problem is resolved if the first application is closed. Microsoft 365 customers who use Excel, Word, PowerPoint, OneNote, Publisher, and Access are affected. The most significant symptom is the failure of the Copilot pane to launch when multiple Office applications are open simultaneously. The Office team is working to resolve this issue and will provide updates when additional details or a fix are available.

Timeline

  1. 06.10.2025 20:16 1 articles · 9h ago

    Microsoft Investigates Copilot Issues with Multiple Office Apps Running

    Microsoft is investigating a bug affecting Microsoft 365 customers that causes issues with Copilot when multiple Office applications are running simultaneously. The bug occurs when one Office application initiates a WebView2 instance, and another attempts to start a second instance. The problem is resolved if the first application is closed. The Office team is working to resolve this issue and will provide updates when additional details or a fix are available.

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