Imagine you're a developer working on a new web application that requires a secure connection (HTTPS) for testing purposes. You've set up a local development server on your machine, and it's configured to run on port 11501. To ensure that the connection between your browser and the server is secure, you've obtained or generated a security certificate for localhost .
Blog Post Title: How to Fix "Not Secure" Verified HTTPS Errors on Localhost:11501 1. The Problem: Why Localhost says "Not Secure" https localhost11501 verified
mkcert certificates typically last 10 years, but other tools generate short-lived certs. Check the certificate validity by clicking the padlock (even the warning one) and viewing the certificate details. Imagine you're a developer working on a new
If you are a developer or an employee trying to get your software to work, follow these steps to verify the connection: 1. The "Proceed Anyway" Shortcut For a quick fix in Chrome or Edge: Click on the privacy error page. Select Proceed to localhost (unsafe) . Blog Post Title: How to Fix "Not Secure"
With mkcert certificates, the browser verifies the connection.
Service overview and network port requirements - Windows Server 12 Feb 2026 —
dotnet dev-certs https --trust