Suddenly my n8n instance froze while using the Brave browser. I ended the session and cleared all cookies and session data from the browser. When I tried to log in again, the browser froze, and I couldn’t access the inspection tool (Developer Console). I did manage to get one log entry:
vcd15cbe7772f49c399c6a5babf22c1241717689176015:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT
self-install/?instanceId=...:102 Uncaught (in promise) NotAllowedError: requestStorageAccess not allowed
I tried using different browsers and killing the processes. I use BitDefender, but I couldn’t find any event logs or threats using the Threats Explorer.
This only happens on my user account for the instance we use at the company.
This looks like a browser security issue rather than an n8n authentication problem. The `ERR_BLOCKED_BY_CLIENT` error suggests BitDefender or another security extension is blocking the login process.
Try these steps:
• Temporarily disable BitDefender’s web protection and browser extensions
• Test login in a completely clean browser profile or incognito mode
• Check if your company’s firewall or security software is blocking n8n’s authentication endpoints
• As a last resort, try accessing n8n from a different network to rule out network-level blocking
The fact that it only affects your user account suggests the issue might be tied to stored browser data or security policies specific to your profile. Based on similar issues in [github.com](Login problems · Issue #13883 · n8n-io/n8n · GitHub), clearing all browser data and testing with minimal security software interference usually resolves these authentication blocks.