My site downloaded some file after proxy enable

My site is blnepal.org.np
After dns proxy enable in Cloudflare my site is redirect to redacted this url and download some file. But if I disable the proxy it open as normal.
This happen only from visitor of windows os.
All are fine if visitor are from mobile or mac or other operating system.

I have tested by turn of the dns proxy it nomaly open everywhere even in windows computer.

Help me to solve this error.

Welcome to the Cloudflare Community. :logodrop:

I am sorry to hear about your misfortune.

If your site is redirecting to a malicious URL in some circumstances then it is possible your Cloudflare account has been compromised. There have been a few cases where malicious Redirect Rules have been added to accounts that trigger a redirect only with Windows user agents.

You should secure your account by resetting your password, configuring 2FA and rotating your API keys & tokens.

You should also review the audit log to see what malicious configuration has been added and revert it.

In previous cases it has been a Redirect Rule such as this that has been added:

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