Printable Certificate Errors Reference Chart
This one-page reference is for anyone checking TLS certificate problems on a server, site, or app. It lists common certificate errors in three columns: Error, Likely cause, and Fix. Rows include Expired | Not renewed | Renew and install, Name mismatch | Hostname not in SANs | Reissue with the right names, and Incomplete chain | Intermediate missing | Install the CA bundle.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 63 KB
Free for personal, family and classroom use.
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Use it as a quick troubleshooting guide when a certificate fails to validate or a browser warning appears. Match the error to the likely cause, then follow the fix column to renew, reissue, or install the missing chain files. Keep it near your deployment notes or incident runbook for fast checks during certificate work.
Good for
- Check common TLS certificate errors quickly
- Match validation errors to likely causes
- Guide renewal and chain installation steps
Tip: Print it on Letter paper and keep it near server setup notes for quick troubleshooting.
4 files · XLSX, PDF, DOCX
Get every sheet: TLS Certificate Operations Pack
This sheet plus 3 more in one download, with the editable Excel and Word files. Printable certificate management sheets: certificate inventory and renewal tracker, CSR request checklist, installation checklist and a common errors reference.
$3.00 USD, one-time 4 files · about $0.75 each
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- 7-day refund
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