𝗪𝗵𝘆 𝗬𝗼𝘂𝗿 𝗣𝗹𝗮𝘆𝘄𝗿𝗶𝗴𝗵𝘁 𝗣𝗿𝗼𝘅𝘆 𝗖𝗵𝗲𝗰𝗸 𝗜𝘀 𝗡𝗼𝘁 𝗘𝗻𝗼𝘂𝗴𝗵

𝗪𝗵𝘆 𝗬𝗼𝘂𝗿 𝗣𝗹𝗮𝘆𝘄𝗿𝗶𝗴𝗵𝘁 𝗣𝗿𝗼𝘅𝘆 𝗖𝗵𝗲𝗰𝗸 𝗜𝘀 𝗡𝗼𝘁 𝗘𝗻𝗼𝘂𝗴𝗵

You check your proxy IP. It is correct. You assume the browser is ready. Then your login fails.

An IP check answers one question. Which IP did this request use?

It does not answer the real question. Does the site trust your browser environment?

A working proxy is not a working login.

The problem is often the browser context.

Check these things:

• Persistent profiles.
• Cookies.
• Local storage.
• Redirect paths.
• Session state.

Avoid these mistakes:

• Testing the proxy with curl but running the task in Playwright.
• Testing in a fresh browser but running in a persistent profile.
• Testing in headed mode but running headless.

Try these steps:

• Run the IP test in the same browser context as the login.
• Log requests with 400 or 407 errors.
• Look for an account email or avatar in the UI.
• Reload the page to see if the session lasts.

A URL is not a success. Reaching a dashboard URL does not mean you are logged in. Find a stable account marker.

Stop repeating the same IP test. Look at the browser state.

Source: https://dev.to/web4browser/my-playwright-proxy-worked-but-login-still-failed-3500