codex - 💡(How to fix) Fix Codex Desktop fails Power BI Modeling MCP writes while Codex CLI succeeds

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What version of the Codex App are you using (From “About Codex” dialog)?

26.519.22136

What subscription do you have?

Enterprise

What platform is your computer?

Microsoft Windows NT 10.0.22631.0 x64

What issue are you seeing?

Power BI Modeling MCP reads work in both Codex Desktop and Codex CLI. Writes fail only in Codex Desktop. The same MCP configuration and same Power BI Desktop session successfully perform writes through Codex CLI. Behavior: Reads succeed Tool discovery succeeds Connection succeeds Write operations fail or are declined --skipconfirmation does not resolve the issue in Desktop Same config works correctly in Codex CLI

Mcp Config: [mcp_servers.powerbi-modeling-mcp] command = "npx" args = ["-y", "@microsoft/powerbi-modeling-mcp@latest", "--start", "--skipconfirmation"]

What steps can reproduce the bug?

Launch Power BI Desktop Open PBIX Launch Codex Desktop Connect to Power BI Modeling MCP Ask Codex Desktop to add a column or measure Write fails Repeat same steps in Codex CLI Write succeeds

What is the expected behavior?

Desktop and CLI should behave consistently for MCP write operations.

Additional information

No response

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codex - 💡(How to fix) Fix Codex Desktop fails Power BI Modeling MCP writes while Codex CLI succeeds