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Tutorial · Proxynet Blog

  1. Published

    400 Bad Request Error: What It Means and How to Fix It

    400 bad request means the server got a request it could not accept: a broken link, oversized cookies or invalid data. How visitors and developers fix it.

    Written by: Acar Diveroli

  2. Published

    401 Unauthorized Error: What It Means and How to Fix It

    A 401 unauthorized error means the site or API got no valid credentials. Visitors fix it by signing in again; developers check the header, scheme and token.

    Written by: Acar Diveroli

  3. Published

    Hosts File: Where It Is and How to Edit It

    The hosts file maps names to IP addresses before DNS is asked. Find it on Windows 11, Mac and Linux, edit it as administrator and reset it if it was changed.

    Written by: Acar Diveroli

  4. Published

    What Is Traceroute and How Do You Use It?

    Traceroute lists the routers your traffic crosses on its way to a site. How tracert works, how to run it on Windows, Mac and Linux and how to read the output.

    Written by: Acar Diveroli

  5. Published

    DNS Server Not Responding: What It Means and How to Fix It

    DNS server not responding means your device asked for a site's address and got no reply. Find out if it's the router, the provider or one device, and fix it.

    Written by: Acar Diveroli

  6. Published

    err_address_unreachable: What It Means and How to Fix It

    err_address_unreachable means your device has no route to the address Chrome tried to open: a router page, a Mac setting, a VPN or IPv6. Fixes for each device.

    Written by: Acar Diveroli

  7. Published

    err_connection_closed: What It Means and How to Fix It

    err_connection_closed means a connection was closed before the page arrived, by the site or a VPN, proxy or filter in between. Causes and fixes for each device.

    Written by: Acar Diveroli

  8. Published

    Facebook Account Locked: Why It Happens and How to Unlock It

    Facebook locks an account when it sees unusual activity, such as a login from a new place. What each lock screen means and how to unlock it the official way.

    Written by: Acar Diveroli

  9. Published

    err_http2_protocol_error: Causes and Fixes in Chrome

    err_http2_protocol_error means Chrome received an HTTP/2 frame it could not accept and dropped the request. Causes, visitor fixes and what site owners check.

    Written by: Acar Diveroli

  10. Published

    err_network_changed: What It Means and How to Fix It

    err_network_changed means Chrome dropped the page because your network changed mid-load: Wi-Fi to cable, a VPN, mobile data. Causes and fixes for each device.

    Written by: Acar Diveroli

  11. Published

    PowerShell Proxy Settings: Invoke-WebRequest With a Proxy

    Add -Proxy and -ProxyCredential to Invoke-WebRequest, or set them once in $PSDefaultParameterValues. We cover 5.1 vs 7, environment variables, 407 and SOCKS5.

    Written by: Acar Diveroli

  12. Published

    500 Internal Server Error: What It Means and How to Fix It

    500 internal server error means the site's own application failed while building the page. What to try, and how site owners and developers find the cause.

    Written by: Acar Diveroli

  1. 400 Bad Request Error: What It Means and How to Fix It

    Tutorial

    Published

  2. 401 Unauthorized Error: What It Means and How to Fix It

    Tutorial

    Published

  3. Hosts File: Where It Is and How to Edit It

    Tutorial

    Published

  4. What Is Traceroute and How Do You Use It?

    Tutorial

    Published

  5. DNS Server Not Responding: What It Means and How to Fix It

    Tutorial

    Published

  6. err_address_unreachable: What It Means and How to Fix It

    Tutorial

    Published

  7. err_connection_closed: What It Means and How to Fix It

    Tutorial

    Published

  8. Facebook Account Locked: Why It Happens and How to Unlock It

    Tutorial

    Published

  9. err_http2_protocol_error: Causes and Fixes in Chrome

    Tutorial

    Published

  10. err_network_changed: What It Means and How to Fix It

    Tutorial

    Published

  11. PowerShell Proxy Settings: Invoke-WebRequest With a Proxy

    Tutorial

    Published

  12. 500 Internal Server Error: What It Means and How to Fix It

    Tutorial

    Published