Use a small diagnostic tool before changing five things at once.
Tools are tied to the same evidence-first troubleshooting model as canonical problem records. They are deliberately narrow, explain what they can and cannot infer, and avoid arbitrary remote scanning.
Windows Error Decoder
Normalize and decode a reviewed starter catalog of Windows/Windows Update HRESULT-style error codes, then jump to a canonical TroubleByte fix where one exists.
Runs locally in your browserBSOD / Stop Code Decoder
Decode a reviewed starter catalog of Windows bug-check values and stop names without treating the code as proof of one failed component.
Runs locally in your browserHTTP & Browser Error Decoder
Separate HTTP response codes, Cloudflare 52x failures and browser/DNS error strings, then jump to a canonical troubleshooting guide when one exists.
Runs locally in your browserDNS Inspector
Query public A, AAAA, CNAME, MX, NS and TXT records through a fixed Cloudflare 1.1.1.1 DNS-over-HTTPS resolver and flag common resolution states.
Public DNS only · no URL fetchingBrowser & System Info
Generate a copyable browser-side diagnostic report with platform, viewport, browser capability and storage information for troubleshooting context.
No automatic uploadNo port scanner, arbitrary URL fetcher or private-network probe.
The first tool set is intentionally low-risk. Remote tools only contact fixed infrastructure required for the diagnostic, and client-side tools do not upload their report unless you explicitly choose to share it elsewhere.