TechClassy
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TechClassy diagnostic route

Network & proxy

Distinguish browser-only, proxy, VPN, DNS, and managed-network evidence without defaulting to destructive network resets.

Paste the message or a short log excerpt. Keep its code and source.

0 / 12,000 characters

Local processing · no upload

Ctrl/⌘ + Enter

Try a scenario
Resume a saved session — paste a Resume Capsule

The capsule is validated and restored only in this browser. An invalid capsule changes nothing.

Complete, source-reviewed pages

Browse the supported diagnostic records

ERR_PROXY_CONNECTION_FAILED Browser could not connect through the configured proxy pathChromium reported that the connection attempt through the configured proxy did not succeed. ERR_QUIC_PROTOCOL_ERROR The browser's QUIC connection failedChromium reported a failure while using the QUIC transport path. The message does not establish whether the browser, network, VPN, proxy, firewall, or server ended the path. ERR_SPDY_PROTOCOL_ERROR Chromium detected a protocol-framing failure on the HTTP/2/SPDY sessionChromium maps this message to a SPDY protocol error. It records that the browser could not continue the affected protocol session, but it does not identify whether the origin server, intermediary, browser state, extension, proxy, or network path produced the invalid exchange.

After the first check

Read the evidence this route produces

Paste one time-matched Event Viewer record as rendered text or XML and extract the provider, Event ID, time, level, faulting fields, and diagnostic tokens without uploading the event.

Windows Event Viewer Error ParserNo upload · bounded excerpt · source-governed interpretation

Local-first utility

Privacy

The diagnostic parser, evidence readers, verification loop, and Evidence Pack run in your browser. TechClassy does not intentionally store the raw text you paste, Event Viewer or update-log excerpts, full command output, usernames, local file paths, dump files, device serial numbers, observations, parsed summaries, or generated Evidence Packs.

No advertising, analytics, session replay, account system, upload surface, or third-party diagnostic script is loaded in this release. Standard hosting security logs may contain request metadata such as time, requested path, and network information; diagnostic and evidence text is not sent as a URL parameter or API body by the tool.

Use boundary

TechClassy organizes evidence and reviewed next checks. It is not a substitute for Microsoft, an OEM, an employer's IT team, or a qualified repair professional. Results distinguish confirmed facts from possible causes and do not guarantee a repair.

Back up important data before making system changes. Stop when an action requires credentials, firmware changes, disk work, account recovery, or a command whose prerequisites you cannot verify.

Independent operation

This is a newly researched, independently operated diagnostic product. It does not claim to be the prior TechClassy editorial team or a continuation of prior authorship.

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