https://errno.jofrey.eu/categories/Recent content in Topics on errnoHugoen-usTue, 15 Sep 2026 00:00:00 +0000https://errno.jofrey.eu/categories/web-platform-and-delivery/Tue, 15 Sep 2026 00:00:00 +0000https://errno.jofrey.eu/categories/web-platform-and-delivery/<p>Cloudflare, DNS and Search Console: email that is accepted and then refused, custom domains that answer 522, bot scoring that rejects headless browsers, and a phishing flag on a site with no login.</p>https://errno.jofrey.eu/categories/apis-and-automation/Mon, 14 Sep 2026 00:00:00 +0000https://errno.jofrey.eu/categories/apis-and-automation/<p>REST APIs that answer with the wrong status code, request shapes that changed between versions, authentication transports that silently differ, and clients that fail before a request leaves the machine.</p>https://errno.jofrey.eu/categories/documents-and-spreadsheets/Mon, 14 Sep 2026 00:00:00 +0000https://errno.jofrey.eu/categories/documents-and-spreadsheets/<p>Generating .docx and .xlsx files that survive a real reader: tracked changes, page setup, merged cells, and why converted PDFs are not templates.</p>https://errno.jofrey.eu/categories/windows-and-wsl/Mon, 14 Sep 2026 00:00:00 +0000https://errno.jofrey.eu/categories/windows-and-wsl/<p>Filesystem mounts that exist but cannot serve I/O, drive letters WSL2 refuses to read, and where Windows desktop apps actually keep their data.</p>https://errno.jofrey.eu/categories/servers-and-infrastructure/Sat, 22 Aug 2026 00:00:00 +0000https://errno.jofrey.eu/categories/servers-and-infrastructure/<p>Container registries, SSH transports, and version control on machines you do not fully administer - including the errors that are permission problems and the ones that only look like them.</p>