Sometimes, users encounter the error “Download failed due to authentication error. Please check username and password in your feed configuration and try again.” when attempting to upload a product feed to Google Merchant Center.
This issue is usually reported on sites using Cloudflare, specifically when Super Bot Fight Mode is enabled. The feature often blocks legitimate bot traffic, including Google’s requests, leading to this authentication error.
While there are multiple discussions on the Cloudflare community forums, the most reliable solution we’ve identified is to disable Super Bot Fight Mode.
You can follow this documentation for step-by-step instructions on how to turn it off.
