Metamask Bug Freaking Users, Tab Automatically Opens on Browser Launch

MetaMask Auto-Opening on Chrome/Brave? It’s a Bug — Not a Hack

You’re not alone. Tons of users across Chrome and Brave are reporting that MetaMask auto-launches a new tab every time the browser starts. The link usually looks like this:

What’s Causing It?

MetaMask confirmed this is a bug introduced in version 12.14.1 of their Chrome extension. It’s not malware, not a phishing attack, and not related to anything shady like RATs or viruses.

🔧 From MetaMask support: “We’re aware of an issue in MetaMask Extension v12.14.1 causing the extension tab to open on every browser startup. An update is in progress.”

🚑 Temporary Fixes (Until It’s Fully Patched)

Update MetaMask
Check if version 12.15.0 is available — many users say it fixed the issue.
Toggle the Full-View Option
Go to:
Settings → Advanced → "Show extension in full-size view"
Toggle it OFF, then ON again.
Disable and Re-enable the Extension
In Chrome, go to:
chrome://extensions/ → Toggle MetaMask off, then back on.
Unpin or Disable MetaMask
If you rarely use it, unpin it or disable the extension temporarily.
DON’T re-import your seed phrase or reinstall unnecessarily
Doing so won’t fix the bug — and always be cautious about exposing your seed phrase.

🚨 Reminders

Do NOT enter your seed phrase into random popups or windows.
MetaMask support will never DM you.
If it feels suspicious but you’re using the official extension, it’s most likely just this bug.