Fix the tech problem in front of you

Clear, practical technology help in plain English for Windows, browsers, home internet, phones and error codes.

    Try “wifi connected no internet”, “Chrome not loading”, “502”, or “reset network settings”.

    Most-searched fixes

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    Chrome & browser errors

    ERR_CONNECTION_RESET in Chrome (Windows, Mac, Android)

    Chrome started talking to the website, then something in between abruptly closed the connection. Often the cause is local: a VPN or proxy, antivirus web filtering, a stale network stack, or a router.

    Chrome & browser errors

    DNS_PROBE_FINISHED_NXDOMAIN in Chrome

    The DNS lookup returned “no such domain.” Either the DNS configuration is wrong or the record doesn’t exist.

    Chrome & browser errors

    ERR_CONNECTION_REFUSED in Chrome

    Nothing is accepting the connection on that host and port: the service is down, blocked by a firewall, or a bad proxy setting.

    Windows processes & performance

    DISM /RestoreHealth and SFC /scannow: How to Use Them

    DISM and SFC are the two built-in tools that repair Windows system files. DISM fixes the component store that Windows repairs itself from; SFC then checks and replaces damaged system files using that store.

    iPhone

    SOS Only on iPhone: What It Means and How to Fix It

    When the status bar shows SOS or “SOS only”, your iPhone isn't connected to your carrier's network but can still place emergency calls through any available network. It's caused by poor coverage, a carrier or SIM problem, or a network setting.

    Chrome & browser errors

    ERR_SSL_PROTOCOL_ERROR in Chrome

    Chrome couldn't complete the secure (HTTPS) handshake with the website. Interfering antivirus, proxies or extensions are common on your side; a misconfigured HTTPS server is the cause when every device fails.

    Website (HTTP) errors

    403 Forbidden Error: What It Means and How to Fix It

    The server understood the request but refuses to authorize it: permissions, IP blocking, a WAF rule, or a missing index file.

    Hardware, drivers & audio

    Printer Offline? How to Get It Back Online (Windows)

    Windows can't talk to the printer, so it marks it “Offline”. The printer may have dropped off Wi-Fi, changed IP address, been switched to offline mode, or the print spooler has jammed.

    Look up a specific error code

    Have an exact code or message, like a Windows 0x8007xxxx, an HTTP 502, a Chrome ERR_ code? Search our error-code database for the cause and a step-by-step fix.

    All topics

    Windows86 guides

    Windows Troubleshooting Guides

    Step-by-step help for the Windows problems people hit most often: connectivity that stops working, network settings that need resetting, updates that fail, and performance that drags. Steps are written for Windows 11, with Windows 10 differences noted where they matter.

    Browsers36 guides

    Browser Troubleshooting Guides

    When a browser stops loading pages, slows to a crawl, or crashes as soon as it opens, the cause is usually a handful of familiar culprits. These guides walk through them in order, for Chrome, Edge and Firefox.

    Internet & Networking15 guides

    Internet and Networking Troubleshooting Guides

    Most ‘the internet is down’ moments come down to Wi-Fi, DNS, or a single misbehaving device, not the whole connection. These guides help you find which, and fix it, without calling your provider.

    iPhone, Android & Mac38 guides

    iPhone, Android and Mac Troubleshooting Guides

    Phone and Mac problems cluster around charging, connectivity, messaging and updates. These guides cover iPhone, Android and Mac with the exact Settings paths for current versions.

    Security & Privacy4 guides

    Security and Privacy Guides

    Security guidance that sticks to safe, mainstream advice: how to read a certificate warning, reset a browser without losing what matters, and control cookies, with no scare tactics and no dubious tools.

    Error Codes188 guides

    Error Code Lookup and Fixes

    Have an exact error code or message? This section indexes every code in our database. Use the search tool for an instant match, or browse the list below.

    How we write these guides

    Written and fact-checked by the TechIssueGuide editorial team. Each set of steps is checked against current versions of Windows, macOS, Android, iOS and the major browsers and against official vendor documentation, and guides are reviewed regularly to keep them accurate.

    • Steps checked against current OS and browser versions and official vendor documentation.
    • Windows 10 and Windows 11 differences called out explicitly.
    • No risky registry hacks or third-party “repair” tools unless clearly justified.
    • Guides carry a visible “last reviewed” date and are updated when software changes.

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