🚫 “It Works On My Machine” Is The Worst Answer

When someone reports a bug and we reply “it works on my machine”, we only prove one thing: we do not understand the issue. Users do not care that our setup is fine. They pay for results and expect fixes. Our job is to find the root cause, not dismiss the problem.

Why you should never say it

❌ The user hears a refusal and feels ignored.
🔄 The bug stays in production and resurfaces at the worst moment.
🚨 The team loses trust: QA, managers, analysts see we are not ready to investigate.
🧭 We miss a chance to learn real scenarios and improve the product.

What to do instead

Ask for details. Browser, device, OS version, steps, time — every clue matters.
Request evidence. Screenshot, video, logs, order IDs, captured requests.
Reproduce the bug. Mirror the environment: VPN, language, plan, time zone.
Check telemetry. Logs, Sentry, console output, analytics — look for patterns.
Offer a workaround. Even before the fix lands, show users how to move forward.
Communicate status. “I found the cause”, “patch is ready”, “release goes out today”. Keep people in the loop.

Common causes behind “works for me”

Different browser versions or security policies.
Unique client settings: fonts, zoom, VPN, blockers.
Third-party integrations only certain users have (payments, CRM, ERP).
Out-of-sync data or migrations still rolling out.
Cache or service workers holding outdated code.

Quick checklist before you respond

✅ I reproduced the bug myself or via automated tests.
✅ I gathered information about the user’s environment.
✅ I found the root cause or logged a detailed ticket.
✅ I updated stakeholders on the current status.

Takeaway

Being a developer means owning the outcome, not just the code. Replace “it works on my machine” with “I am on it” and “issue fixed”. That is how you build trust, improve the product, and grow as a professional. 💪