Add-on components that enhance and customize the Visual Studio integrated development environment
A 429 response means the Visual Studio Marketplace is actively rate‑limiting your publishing attempts, usually because your account, IP address, or automated workflow is sending repeated or high‑frequency requests that the system interprets as excessive. This can happen if a CI/CD pipeline keeps retrying failed uploads, if a corrupted .vsix package triggers repeated submission attempts, or if an outdated PAT or OAuth token is stuck in a loop. Once Marketplace throttles you, the block can persist indefinitely until the underlying request pattern changes. Because the error has lasted this long, the most effective steps are to regenerate your PAT, temporarily publish from a different network to bypass IP‑level throttling, ensure no automated process is hammering the Marketplace API, and if the issue continues contact Microsoft support so they can check whether your account or IP has been flagged by Marketplace rate‑limit protections.