Hi Chang Min,
At present, Windows doesn’t provide a native policy or registry setting to limit the maximum number of tabs a user can open in File Explorer. The tabbed interface is designed to improve usability, but it doesn’t include administrative constraints like a hard cap on tab count.
That said, there are a few practical approaches you can take. First, you can monitor Explorer performance through Endpoint Analytics or Performance Monitor to ensure no memory leaks are occurring in your environment. Second, you can use Group Policy or Intune to encourage best practices, such as limiting simultaneous Explorer sessions or redirecting staff to mapped drives and shortcuts instead of keeping dozens of tabs open. Third, if memory usage is a recurring issue, you might consider deploying third-party file management tools that allow tab limits, though that would be outside the native Windows experience.
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Jason.